Research rigor and reproducibility in research education: A CTSA institutional survey by Cathrine Axfors, Mario Malički, Steven N. Goodman

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Mapping and systematic appraisal of umbrella reviews in epidemiological research: a protocol for a meta-epidemiological study by Lazaros Belbasis, Robin D Brooker, Emmanuel Zavalis, Angelo Maria Pezzullo, Cathrine Axfors, John PA Ioannidis

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Self-Harm Thoughts Postpartum as a Marker for Long-Term Morbidity by Stavros I. Iliadis, Alkistis Skalkidou, Hanna Ranstrand, Marios K. Georgakis, Marios K. Georgakis, Cathrine Axfors, Fotios C. Papadopoulos

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Medical journal requirements for clinical trial data sharing: Ripe for improvement by Florian Naudet, Maximilian Siebert, Claude Pellen, Jeanne Gaba, Cathrine Axfors, Ioana Cristea, Valentin Danchev, Ulrich Mansmann, Christian Ohmann, Joshua D. Wallach, David Moher, John P. A. Ioannidis

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Medical journal requirements for clinical trial data sharing: Ripe for improvement. by Florian Naudet, Maximilian Siebert, Claude Pellen, Jeanne Gaba, Cathrine Axfors, Ioana Cristea, Valentin Danchev, Ulrich Mansmann, Christian Ohmann, Joshua D Wallach, David Moher, John P A Ioannidis

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The worldwide clinical trial research response to the COVID-19 pandemic - the first 100 days [version 1; peer review: 2 approved] by Perrine Janiaud, Cathrine Axfors, Janneke van't Hooft, Ramon Saccilotto, Arnav Agarwal, Christian Appenzeller-Herzog, Despina G. Contopoulos-Ioannidis, Valentin Danchev, Ulrich Dirnagl, Hannah Ewald, Gerald Gartlehner, Steven N. Goodman, Noah A. Haber, Angeliki Diotima Ioannidis, John P. A. Ioannidis, Mark P. Lythgoe, Wenyan Ma, Malcolm Macleod, Mario Malički, Joerg J. Meerpohl, Yan Min, David Moher, Blin Nagavci, Florian Naudet, Christiane Pauli-Magnus, Jack W. O'Sullivan, Nico Riedel, Jan A. Roth, Mandy Sauermann, Stefan Schandelmaier, Andreas M. Schmitt, Benjamin Speich, Paula R. Williamson, Lars G. Hemkens

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The worldwide clinical trial research response to the COVID-19 pandemic - the first 100 days [version 2; peer review: 2 approved] by Perrine Janiaud, Cathrine Axfors, Janneke van't Hooft, Ramon Saccilotto, Arnav Agarwal, Christian Appenzeller-Herzog, Despina G. Contopoulos-Ioannidis, Valentin Danchev, Ulrich Dirnagl, Hannah Ewald, Gerald Gartlehner, Steven N. Goodman, Noah A. Haber, Angeliki Diotima Ioannidis, John P. A. Ioannidis, Mark P. Lythgoe, Wenyan Ma, Malcolm Macleod, Mario Malički, Joerg J. Meerpohl, Yan Min, David Moher, Blin Nagavci, Florian Naudet, Christiane Pauli-Magnus, Jack W. O'Sullivan, Nico Riedel, Jan A. Roth, Mandy Sauermann, Stefan Schandelmaier, Andreas M. Schmitt, Benjamin Speich, Paula R. Williamson, Lars G. Hemkens

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Author Correction: Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials by Cathrine Axfors, Andreas M. Schmitt, Perrine Janiaud, Janneke van’t Hooft, Sherief Abd-Elsalam, Ehab F. Abdo, Benjamin S. Abella, Javed Akram, Ravi K. Amaravadi, Derek C. Angus, Yaseen M. Arabi, Shehnoor Azhar, Lindsey R. Baden, Arthur W. Baker, Leila Belkhir, Thomas Benfield, Marvin A. H. Berrevoets, Cheng-Pin Chen, Tsung-Chia Chen, Shu-Hsing Cheng, Chien-Yu Cheng, Wei-Sheng Chung, Yehuda Z. Cohen, Lisa N. Cowan, Olav Dalgard, Fernando F. de Almeida e Val, Marcus V. G. de Lacerda, Gisely C. de Melo, Lennie Derde, Vincent Dubee, Anissa Elfakir, Anthony C. Gordon, Carmen M. Hernandez-Cardenas, Thomas Hills, Andy I. M. Hoepelman, Yi-Wen Huang, Bruno Igau, Ronghua Jin, Felipe Jurado-Camacho, Khalid S. Khan, Peter G. Kremsner, Benno Kreuels, Cheng-Yu Kuo, Thuy Le, Yi-Chun Lin, Wu-Pu Lin, Tse-Hung Lin, Magnus Nakrem Lyngbakken, Colin McArthur, Bryan J. McVerry, Patricia Meza-Meneses, Wuelton M. Monteiro, Susan C. Morpeth, Ahmad Mourad, Mark J. Mulligan, Srinivas Murthy, Susanna Naggie, Shanti Narayanasamy, Alistair Nichol, Lewis A. Novack, Sean M. O’Brien, Nwora Lance Okeke, Léna Perez, Rogelio Perez-Padilla, Laurent Perrin, Arantxa Remigio-Luna, Norma E. Rivera-Martinez, Frank W. Rockhold, Sebastian Rodriguez-Llamazares, Robert Rolfe, Rossana Rosa, Helge Røsjø, Vanderson S. Sampaio, Todd B. Seto, Muhammad Shahzad, Shaimaa Soliman, Jason E. Stout, Ireri Thirion-Romero, Andrea B. Troxel, Ting-Yu Tseng, Nicholas A. Turner, Robert J. Ulrich, Stephen R. Walsh, Steve A. Webb, Jesper M. Weehuizen, Maria Velinova, Hon-Lai Wong, Rebekah Wrenn, Fernando G. Zampieri, Wu Zhong, David Moher, Steven N. Goodman, John P. A. Ioannidis, Lars G. Hemkens

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Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials by Cathrine Axfors, Andreas M. Schmitt, Perrine Janiaud, Janneke van’t Hooft, Sherief Abd-Elsalam, Ehab F. Abdo, Benjamin S. Abella, Javed Akram, Ravi K. Amaravadi, Derek C. Angus, Yaseen M. Arabi, Shehnoor Azhar, Lindsey R. Baden, Arthur W. Baker, Leila Belkhir, Thomas Benfield, Marvin A. H. Berrevoets, Cheng-Pin Chen, Tsung-Chia Chen, Shu-Hsing Cheng, Chien-Yu Cheng, Wei-Sheng Chung, Yehuda Z. Cohen, Lisa N. Cowan, Olav Dalgard, Fernando F. de Almeida e Val, Marcus V. G. de Lacerda, Gisely C. de Melo, Lennie Derde, Vincent Dubee, Anissa Elfakir, Anthony C. Gordon, Carmen M. Hernandez-Cardenas, Thomas Hills, Andy I. M. Hoepelman, Yi-Wen Huang, Bruno Igau, Ronghua Jin, Felipe Jurado-Camacho, Khalid S. Khan, Peter G. Kremsner, Benno Kreuels, Cheng-Yu Kuo, Thuy Le, Yi-Chun Lin, Wu-Pu Lin, Tse-Hung Lin, Magnus Nakrem Lyngbakken, Colin McArthur, Bryan J. McVerry, Patricia Meza-Meneses, Wuelton M. Monteiro, Susan C. Morpeth, Ahmad Mourad, Mark J. Mulligan, Srinivas Murthy, Susanna Naggie, Shanti Narayanasamy, Alistair Nichol, Lewis A. Novack, Sean M. O’Brien, Nwora Lance Okeke, Léna Perez, Rogelio Perez-Padilla, Laurent Perrin, Arantxa Remigio-Luna, Norma E. Rivera-Martinez, Frank W. Rockhold, Sebastian Rodriguez-Llamazares, Robert Rolfe, Rossana Rosa, Helge Røsjø, Vanderson S. Sampaio, Todd B. Seto, Muhammad Shahzad, Shaimaa Soliman, Jason E. Stout, Ireri Thirion-Romero, Andrea B. Troxel, Ting-Yu Tseng, Nicholas A. Turner, Robert J. Ulrich, Stephen R. Walsh, Steve A. Webb, Jesper M. Weehuizen, Maria Velinova, Hon-Lai Wong, Rebekah Wrenn, Fernando G. Zampieri, Wu Zhong, David Moher, Steven N. Goodman, John P. A. Ioannidis, Lars G. Hemkens

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Author Correction: Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials by Cathrine Axfors, Andreas M. Schmitt, Perrine Janiaud, Janneke van’t Hooft, Sherief Abd-Elsalam, Ehab F. Abdo, Benjamin S. Abella, Javed Akram, Ravi K. Amaravadi, Derek C. Angus, Yaseen M. Arabi, Shehnoor Azhar, Lindsey R. Baden, Arthur W. Baker, Leila Belkhir, Thomas Benfield, Marvin A. H. Berrevoets, Cheng-Pin Chen, Tsung-Chia Chen, Shu-Hsing Cheng, Chien-Yu Cheng, Wei-Sheng Chung, Yehuda Z. Cohen, Lisa N. Cowan, Olav Dalgard, Fernando F. de Almeida e Val, Marcus V. G. de Lacerda, Gisely C. de Melo, Lennie Derde, Vincent Dubee, Anissa Elfakir, Anthony C. Gordon, Carmen M. Hernandez-Cardenas, Thomas Hills, Andy I. M. Hoepelman, Yi-Wen Huang, Bruno Igau, Ronghua Jin, Felipe Jurado-Camacho, Khalid S. Khan, Peter G. Kremsner, Benno Kreuels, Cheng-Yu Kuo, Thuy Le, Yi-Chun Lin, Wu-Pu Lin, Tse-Hung Lin, Magnus Nakrem Lyngbakken, Colin McArthur, Bryan J. McVerry, Patricia Meza-Meneses, Wuelton M. Monteiro, Susan C. Morpeth, Ahmad Mourad, Mark J. Mulligan, Srinivas Murthy, Susanna Naggie, Shanti Narayanasamy, Alistair Nichol, Lewis A. Novack, Sean M. O’Brien, Nwora Lance Okeke, Léna Perez, Rogelio Perez-Padilla, Laurent Perrin, Arantxa Remigio-Luna, Norma E. Rivera-Martinez, Frank W. Rockhold, Sebastian Rodriguez-Llamazares, Robert Rolfe, Rossana Rosa, Helge Røsjø, Vanderson S. Sampaio, Todd B. Seto, Muhammad Shahzad, Shaimaa Soliman, Jason E. Stout, Ireri Thirion-Romero, Andrea B. Troxel, Ting-Yu Tseng, Nicholas A. Turner, Robert J. Ulrich, Stephen R. Walsh, Steve A. Webb, Jesper M. Weehuizen, Maria Velinova, Hon-Lai Wong, Rebekah Wrenn, Fernando G. Zampieri, Wu Zhong, David Moher, Steven N. Goodman, John P. A. Ioannidis, Lars G. Hemkens

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Association between convalescent plasma treatment and mortality in COVID-19: a collaborative systematic review and meta-analysis of randomized clinical trials by Cathrine Axfors, Perrine Janiaud, Andreas M. Schmitt, Janneke van’t Hooft, Emily R. Smith, Noah A. Haber, Akin Abayomi, Manal Abduljalil, Abdulkarim Abdulrahman, Yeny Acosta-Ampudia, Manuela Aguilar-Guisado, Farah Al-Beidh, Marissa M. Alejandria, Rachelle N. Alfonso, Mohammad Ali, Manaf AlQahtani, Alaa AlZamrooni, Juan-Manuel Anaya, Mark Angelo C. Ang, Ismael F. Aomar, Luis E. Argumanis, Alexander Averyanov, Vladimir P. Baklaushev, Olga Balionis, Thomas Benfield, Scott Berry, Nadia Birocco, Lynn B. Bonifacio, Asha C. Bowen, Abbie Bown, Carlos Cabello-Gutierrez, Bernardo Camacho, Adrian Camacho-Ortiz, Sally Campbell-Lee, Damon H. Cao, Ana Cardesa, Jose M. Carnate, German Jr. J. Castillo, Rossana Cavallo, Fazle R. Chowdhury, Forhad U. H. Chowdhury, Giovannino Ciccone, Antonella Cingolani, Fresthel Monica M. Climacosa, Veerle Compernolle, Carlo Francisco N. Cortez, Abel Costa Neto, Sergio D’Antico, James Daly, Franca Danielle, Joshua S. Davis, Francesco Giuseppe De Rosa, Justin T. Denholm, Claudia M. Denkinger, Daniel Desmecht, Juan C. Díaz-Coronado, Juan A. Díaz Ponce-Medrano, Anne-Françoise Donneau, Teresita E. Dumagay, Susanna Dunachie, Cecile C. Dungog, Olufemi Erinoso, Ivy Mae S. Escasa, Lise J. Estcourt, Amy Evans, Agnes L. M. Evasan, Christian J. Fareli, Veronica Fernandez-Sanchez, Claudia Galassi, Juan E. Gallo, Patricia J. Garcia, Patricia L. Garcia, Jesus A. Garcia, Mutien Garigliany, Elvira Garza-Gonzalez, Deonne Thaddeus V. Gauiran, Paula A. Gaviria García, Jose-Antonio Giron-Gonzalez, David Gómez-Almaguer, Anthony C. Gordon, André Gothot, Jeser Santiago Grass Guaqueta, Cameron Green, David Grimaldi, Naomi E. Hammond, Heli Harvala, Francisco M. Heralde, Jesica Herrick, Alisa M. Higgins, Thomas E. Hills, Jennifer Hines, Karin Holm, Ashraful Hoque, Eric Hoste, Jose M. Ignacio, Alexander V. Ivanov, Maike Janssen, Jeffrey H. Jennings, Vivekanand Jha, Ruby Anne N. King, Jens Kjeldsen-Kragh, Paul Klenerman, Aditya Kotecha, Fiorella Krapp, Luciana Labanca, Emma Laing, Mona Landin-Olsson, Pierre-François Laterre, Lyn-Li Lim, Jodor Lim, Oskar Ljungquist, Jorge M. Llaca-Díaz, Concepción López-Robles, Salvador López-Cárdenas, Ileana Lopez-Plaza, Josephine Anne C. Lucero, Maria Lundgren, Juan Macías, Sandy C. Maganito, Anna Flor G. Malundo, Rubén D. Manrique, Paola M. Manzini, Miguel Marcos, Ignacio Marquez, Francisco Javier Martínez-Marcos, Ana M. Mata, Colin J. McArthur, Zoe K. McQuilten, Bryan J. McVerry, David K. Menon, Geert Meyfroidt, Ma. Angelina L. Mirasol, Benoît Misset, James S. Molton, Alric V. Mondragon, Diana M. Monsalve, Parastoo Moradi Choghakabodi, Susan C. Morpeth, Paul R. Mouncey, Michel Moutschen, Carsten Müller-Tidow, Erin Murphy, Tome Najdovski, Alistair D. Nichol, Henrik Nielsen, Richard M. Novak, Matthew V. N. O’Sullivan, Julian Olalla, Akin Osibogun, Bodunrin Osikomaiya, Salvador Oyonarte, Juan M. Pardo-Oviedo, Mahesh C. Patel, David L. Paterson, Carlos A. Peña-Perez, Angel A. Perez-Calatayud, Eduardo Pérez-Alba, Anastasia Perkina, Naomi Perry, Mandana Pouladzadeh, Inmaculada Poyato, David J. Price, Anne Kristine H. Quero, Md. M. Rahman, Md. S. Rahman, Mayur Ramesh, Carolina Ramírez-Santana, Magnus Rasmussen, Megan A. Rees, Eduardo Rego, Jason A. Roberts, David J. Roberts, Yhojan Rodríguez, Jesús Rodríguez-Baño, Benjamin A. Rogers, Manuel Rojas, Alberto Romero, Kathryn M. Rowan, Fabio Saccona, Mehdi Safdarian, Maria Clariza M. Santos, Joe Sasadeusz, Gitana Scozzari, Manu Shankar-Hari, Gorav Sharma, Thomas Snelling, Alonso Soto, Pedrito Y. Tagayuna, Amy Tang, Geneva Tatem, Luciana Teofili, Steven Y. C. Tong, Alexis F. Turgeon, Januario D. Veloso, Balasubramanian Venkatesh, Yanet Ventura-Enriquez, Steve A. Webb, Lothar Wiese, Christian Wikén, Erica M. Wood, Gaukhar M. Yusubalieva, Kai Zacharowski, Ryan Zarychanski, Nina Khanna, David Moher, Steven N. Goodman, John P. A. Ioannidis, Lars G. Hemkens

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