TY - CHAP M1 - Book, Section TI - Exploratory Research: Observational Designs A1 - Portney, Leslie G. A1 - Watkins, Mary P. Y1 - 2017 N1 - T2 - Foundations of Clinical Research: Applications to Practice, 3e AB - SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - fadavispt.mhmedical.com/content.aspx?aid=1138251192 ER -