15,4=28; 16,3=29; 17,5=30; 18,4=31; 19,4=32; 20,4=33; 21,6-7=34,1-2; 22,6-7=35,1-2; 23,6-7=36,1-2; 24,7-8=37,1-2; 25,8-10=38,1-3; 26,8-9=42,1-2; 27,8=43 von: American Academy of Pediatrics. Surgical Section: Papers presented at the ... annual meeting of the Surgical Section of the American Academy of Pediatrics
14,2=25; 15,1=26 u.a. von: British Association of Paediatric Surgeons: Papers presented at the ... annual congress of the British Association of Paediatric Surgeons
23,8=19; 24,10=20; 25,11=21; 26,11-12=22,1-2; 27,10=23; 28,9=24; 29,9=25; 30,8=26; 31,6=27; 32,6=28 von: Canadian Association of Paediatric Surgeons: Papers presented at the ... annual meeting of the Canadian Association of Paediatric Surgeons
22,12=18,1; 23,12=19,1; 25,1-2=20,1-2; 26,3=21,1; 27,2-3=22,1-2; 28,3-4=23,1-2; 29,2=24; 30,2=25; 31,1=26; 32,2=27; 33,2=28 von: American Pediatric Surgical Association: Papers presented at the ... annual meeting of the American Pediatric Surgical Association
23,5=20; 24,4=21; 25,7=22; 26,7=23; 27,6=24; 28,6=25; 29,5=26; 30,5=27; 31,2=28; 48,12=46 von: Pacific Association of Pediatric Surgeons: Papers presented at the ... annual meeting of the Pacific Association of Pediatric Surgeons
28,10=1992; 29,8=1993; 30,7=1994; 31,8=1995 von: American Academy of Pediatrics. Section on Surgery: Papers presented at the ... annual meeting of the Section on Surgery of the American Academy of Pediatrics
