TY - BOOK AU - Bhopal, Raj S TI - Concepts of epidemiology : an integrated introduction to the ideas, theories, principles, and methods of epidemiology SN - 192631551 SN - 200105232 U1 - 614.4 BHO PY - 2002/// CY - Oxford PB - Oxford University Press KW - Epidemiology N1 - Includes bibliographical references (p. [297]-309) and index ER -