Anorectal motility in patients with achalasia of the esophagus: recognition of an esophago-rectal syndrome.
Shafik A.
BMC Gastroenterol. 2003 Oct 17;3:28. doi: 10.1186/1471-230X-3-28.
Anal sphincter botulinum toxin injection in children with functional anorectal and colonic disorders: A large institutional study and review of the literature focusing on complications.
Halleran DR, Lu PL, Ahmad H, Paradiso MM, Lehmkuhl H, Akers A, Hallagan A, Bali N, Vaz K, Yacob D, Di Lorenzo C, Levitt MA, Wood RJ.
J Pediatr Surg. 2019 Nov;54(11):2305-2310. doi: 10.1016/j.jpedsurg.2019.03.020. Epub 2019 Apr 23.
The hypertonic rectosigmoid junction: description of a new clinicopathologic entity causing constipation.
Shafik A.
Surg Laparosc Endosc. 1997 Apr;7(2):116-20.
[Effect of alpha-blocking agents on the internal anal sphincter muscle].
Holschneider AM, Kraeft H.
Z Kinderchir Grenzgeb. 1980 Jun;30(2):152-61.
