here are some optional textbook for 4th block....

Medical Epidemiology

By: Raymond Greenberg Stephen Daniels W. Flanders John Eley John Boring
ISBN-10: 0071416374 ISBN-13: 9780071416375
Publisher: McGraw-Hill Companies, The - October 2004
4th Ed.







Basic & Clinical Biostatistics (LANGE Basic Science)

By: Beth Dawson Robert Trapp Beth Dawson Robert Trapp
ISBN-10: 0071410171 ISBN-13: 9780071410175
Publisher: McGraw-Hill Medical - 2004-04-02
Format: Paperback
4th Ed.




Medical Statistics: A Textbook for the Health Sciences

By: Michael J. Campbell David Machin Stephen J. Walters
ISBN-10: 0470025190 ISBN-13: 9780470025192
Publisher: Wiley-Interscience - 2007-08-27
Format: Paperback

not yet available...i'll try to find it





Epidemiology, Biostatistics and Preventive Medicine

By: James F. Jekel MD MPH David L. Katz MD MPH Joann G. Elmore MD MPH Dorothea Wild MD MPH Dr. Med
ISBN-10: 141603496X ISBN-13: 9781416034964
Publisher: Saunders - 2007-05-07Format: Paperback






Epidemiology: with STUDENT CONSULT Online Access (Gordis, Epidemiology)

By: Leon Gordis MD MPH DrPH
ISBN-10: 1416040021 ISBN-13: 9781416040026
Publisher: Saunders - 2008-05-14
Format: Paperback 4th Ed.





Park's Textbook of Preventive and Social Medicine
By: K. Park