Decision-making in surgical study designs: a proposed decision algorithm to aid in the selection of an appropriate research study design for a given surgical intervention: the PERF... by A. H. R. W. Simpson, Navnit S. Makaram, Ewen Harrison, John Norrie

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Validating the QCOVID risk prediction algorithm for risk of mortality from COVID-19 in the adult population in Wales, UK by Jane Lyons, Vahé Nafilyan, Ashley Akbari, Gareth Davies, Rowena Griffiths, Ewen Harrison, Julia Hippisley-Cox, Joe Hollinghurst, Kamlesh Khunti, Laura North, Aziz Sheikh, Fatemeh Torabi, Ronan Lyons

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An external validation of the QCOVID3 risk prediction algorithm for risk of hospitalisation and death from COVID-19: An observational, prospective cohort study of 1.66m vaccinated... by Jane Lyons, Vahé Nafilyan, Ashley Akbari, Stuart Bedston, Ewen Harrison, Andrew Hayward, Julia Hippisley-Cox, Frank Kee, Kamlesh Khunti, Shamim Rahman, Aziz Sheikh, Fatemeh Torabi, Ronan A Lyons

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Evaluation of pragmatic oxygenation measurement as a proxy for Covid-19 severity by Maaike C. Swets, Steven Kerr, James Scott-Brown, Adam B. Brown, Rishi Gupta, Jonathan E. Millar, Enti Spata, Fiona McCurrach, Andrew D. Bretherick, Annemarie Docherty, David Harrison, Kathy Rowan, Neil Young, ISARIC4C Investigators, Geert H. Groeneveld, Jake Dunning, Jonathan S. Nguyen-Van-Tam, Peter Openshaw, Peter W. Horby, Ewen Harrison, Natalie Staplin, Malcolm G. Semple, Nazir Lone, J. Kenneth Baillie

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Characteristics and risk factors for post-COVID-19 breathlessness after hospitalisation for COVID-19 by Luke Daines, Bang Zheng, Omer Elneima, Ewen Harrison, Nazir I. Lone, John R. Hurst, Jeremy S. Brown, Elizabeth Sapey, James D. Chalmers, Jennifer K. Quint, Paul Pfeffer, Salman Siddiqui, Samantha Walker, Krisnah Poinasamy, Hamish McAuley, Marco Sereno, Aarti Shikotra, Amisha Singapuri, Annemarie B. Docherty, Michael Marks, Mark Toshner, Luke S. Howard, Alex Horsley, Gisli Jenkins, Joanna C. Porter, Ling-Pei Ho, Betty Raman, Louise V. Wain, Christopher E. Brightling, Rachael A. Evans, Liam G. Heaney, Anthony De Soyza, Aziz Sheikh

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Prevalence of swallow, communication, voice and cognitive compromise following hospitalisation for COVID-19: the PHOSP-COVID analysis by Linzy Houchen-Wolloff, Sally Singh, Jennifer K Quint, Michael Marks, Nicholas Hart, Matthew Richardson, Ling-Pei Ho, Charlotte E Bolton, Rachael A Evans, Amit Kulkarni, Amisha Singapuri, Felicity Evison, Sarah Wallace, Betty Raman, Trudie Chalder, Claire Marie Nolan, William Man, Ewen Harrison, Nazir I Lone, Chris Brightling, Julie Whitney, James Chalmers, Enya Daynes, Neil J Greening, Annemarie Docherty, Gavin Donaldson, Janet Scott, Camilla Dawson, Tom Yates, Louise V Wain, Marco Sereno, Krisnah Poinasamy, Gemma Clunie, Hamish McAuley, Alex Robert Horsley, Melitta McNarry, Sallyanne Duncan, Olivia C Leavy, Elneima Omer, Aarti Shikotra, Ruth M Saunders, Victoria C Harris, Dan Gower Wootton, Jack Sargent, John Pimm, Lettie Bishop, Neil Sharma, Margaret Coffey

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2020 WSES guidelines for the detection and management of bile duct injury during cholecystectomy by Nicola de’Angelis, Fausto Catena, Riccardo Memeo, Federico Coccolini, Aleix Martínez-Pérez, Oreste M. Romeo, Belinda De Simone, Salomone Di Saverio, Raffaele Brustia, Rami Rhaiem, Tullio Piardi, Maria Conticchio, Francesco Marchegiani, Nassiba Beghdadi, Fikri M. Abu-Zidan, Ruslan Alikhanov, Marc-Antoine Allard, Niccolò Allievi, Giuliana Amaddeo, Luca Ansaloni, Roland Andersson, Enrico Andolfi, Mohammad Azfar, Miklosh Bala, Amine Benkabbou, Offir Ben-Ishay, Giorgio Bianchi, Walter L. Biffl, Francesco Brunetti, Maria Clotilde Carra, Daniel Casanova, Valerio Celentano, Marco Ceresoli, Osvaldo Chiara, Stefania Cimbanassi, Roberto Bini, Raul Coimbra, Gian Luigi de’Angelis, Francesco Decembrino, Andrea De Palma, Philip R. de Reuver, Carlos Domingo, Christian Cotsoglou, Alessandro Ferrero, Gustavo P. Fraga, Federica Gaiani, Federico Gheza, Angela Gurrado, Ewen Harrison, Angel Henriquez, Stefan Hofmeyr, Roberta Iadarola, Jeffry L. Kashuk, Reza Kianmanesh, Andrew W. Kirkpatrick, Yoram Kluger, Filippo Landi, Serena Langella, Real Lapointe, Bertrand Le Roy, Alain Luciani, Fernando Machado, Umberto Maggi, Ronald V. Maier, Alain Chichom Mefire, Kazuhiro Hiramatsu, Carlos Ordoñez, Franca Patrizi, Manuel Planells, Andrew B. Peitzman, Juan Pekolj, Fabiano Perdigao, Bruno M. Pereira, Patrick Pessaux, Michele Pisano, Juan Carlos Puyana, Sandro Rizoli, Luca Portigliotti, Raffaele Romito, Boris Sakakushev, Behnam Sanei, Olivier Scatton, Mario Serradilla-Martin, Anne-Sophie Schneck, Mohammed Lamine Sissoko, Iradj Sobhani, Richard P. ten Broek, Mario Testini, Roberto Valinas, Giorgos Veloudis, Giulio Cesare Vitali, Dieter Weber, Luigi Zorcolo, Felice Giuliante, Paschalis Gavriilidis, David Fuks, Daniele Sommacale

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