TY - BOOK AU - Gordis,Leon TI - Epidemiology SN - 9781455737338 (pbk. : alk. paper) AV - RA651 .G58 2014 U1 - 614.4 23 PY - 2014///] CY - Philadelphia, PA PB - Elsevier/Saunders KW - Epidemiology KW - Epidemiologic Methods N1 - Include index ER -