RT Journal Article SR Electronic T1 Nelson Textbook of Pediatrics. Fifteenth Edition JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 393 OP 393 DO 10.3122/jabfm.9.5.393 VO 9 IS 5 A1 Davis, Leland J. YR 1996 UL http://www.jabfm.org/content/9/5/393.1.abstract AB