STUDY OF OUTCOME AND COMPLICATIONS OF ANORECTAL MYECTOMY IN CHILDREN WITH ULTRASHORT SEGMENT HIRSCHSPRUNG’S DISEASE - J. Ahmadi,; B. Ashjaei,; M. Kalantari,; H. Nahvi,; A. Ebrahimsoltani,; F. Nejat,; M. Joodi,; M. Vali V. Mehrabi, (Acta Medica Iranica)