Recommendations for selection and adaptation of rating scales for clinical studies of rapid-acting antidepressants by Christian Yavorsky, Elizabeth Ballard, Mark Opler, Jan Sedway, Steven D. Targum, William Lenderking

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Are informants required to obtain valid ratings on the Positive and Negative Syndrome Scale (PANSS)? by Cecilie Marie Nielsen, Pernille Kølbæk, David Dines, Mark Opler, Christoph U. Correll, Søren Dinesen Østergaard

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The evolution of illness phases in schizophrenia: A non-parametric item response analysis of the Positive and Negative Syndrome Scale by Anzalee Khan, Jean Pierre Lindenmayer, Mark Opler, Mary E. Kelley, Leonard White, Michael Compton, Zimeng Gao, Philip D. Harvey

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Adapting the Goal Attainment Approach for Major Depressive Disorder by Maggie McCue, Sagar V. Parikh, Lisa Mucha, Sara Sarkey, Charlie Cao, Anna Eramo, Mark Opler, Briana Webber-Lind, Clément François

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Validation of the Arabic Version of Calgary Depression Scale for Schizophrenia. by Yahya Hani, Suhaila Ghuloum, Ziyad Mahfoud, Mark Opler, Anzalee Khan, Arij Yehya, Abdulmoneim Abdulhakam, Samer Hammoudeh, Azza Al-Mujalli, Reem Elsherbiny, Hassen Al-Amin

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