Absent Smooth Muscle Actin Immunoreactivity of the Small Bowel Muscularis Propria Circular Layer in Association with Chromosome 15q11 Deletion in Megacystis-Microcolon-Intestinal Hypoperistalsis SyndromeRéka Szigeti, Nina Tatevian, Beth A. Carter et al.|Pediatric and Developmental Pathology|2009Cited by 27