TY - BOOK AU - Polgar,Steven AU - Thomas,Shane A. TI - Introduction to research in the health sciences SN - 9780702074936 AV - R850 .P52 2020 U1 - 610.72 KW - Medicine KW - Research KW - Biomedical Research KW - methods KW - Research Design N1 - Previous edition: Edinburgh: Churchill Livingstone, 2013; Includes bibliographical references and index ER -