TY - BOOK AU - Rothman, Kenneth J AU - Greenland, Sander AU - Lash, Timothy L TI - Modern epidemiology SN - 9780781755641 U1 - 614.4 PY - 2008/// CY - Philadelphia PB - Lippincott Williams and Wilkins KW - EPIDEMIOLOGY KW - Epidemiology-Statistical Methods KW - Epidemiologic Methods KW - Epidemiology-Research ER -