Symptom prevalence differences of depression as measured by BDI and PHQ scales in the Look AHEAD study by Elizabeth M. Vaughan, Craig A. Johnston, Jennette P. Moreno, Lawrence J. Cheskin, Gareth R. Dutton, Molly Gee, Sarah A. Gaussoin, William C. Knowler, W. Jack Rejeski, Thomas A. Wadden, Susan Z. Yanovski, John P. Foreyt, The Look AHEAD Research Group

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