TY - BOOK AU - Vetter,N.J. AU - Matthews,I.P. TI - Epidemiology and public health medicine SN - 0443057044(hardcover) U1 - 614.4 21 PY - 1999/// CY - Edinburgh PB - Churchill Livingstone KW - Epidemiology KW - Local N1 - Includes bibliographical references and index ER -