COMPARATIVE EVALUATION OF TAN’S, MARVEN’S AND MODIFIED MARVEN’S APPROACHES USING MYRINGOTOMY KNIFE IN OF LAPAROSCOPIC
PYLOROMYOTOMY Ahmed Abo Elyazid, MCh, Mohamed Shalaby, MD, AbdelMotaleb Effat, MD, Ahmed Eissa, MD, Sherif M Shehata,
MCh, CST, MD, PhD; Section of Pediatric Surgery, Faculty of Medicine, Tanta University, Tanta, Egypt