Rubin, R.H. Voss, Carolyn Derksen, D.J. etal Medicine A Primary Care Approach - W.B. Saunders Company:Philadelphia 1996 - 1-482, index 483-493 - Medicine Primary Care ISBN: 0-7216-5200-X Nat. Bib. No.: 003655 Dewey Class. No.: 616R81