KABACK Michael M. 300.504 PROGRAM Program outline and APS/SPR abstracts : session listings and contents appear in the Pediatric Academic Societies' Annual Meeting Pocket Program : APA abstracts appear in the APA Abstract Publication : May 1 -4 San Francisco I [PAS Progr. Comm. Samuel Hawgood chair]. - Hagerstown : Lippincott Williams and Wilkins, 1999]. -