1. The SCARE Statement: consensus-based surgical case report guidelines;Agha;Int. J. Surg.,2016
2. Perianal abscess/fistula disease;Whiteford;Clin. Colon Rectal Surg.,2007
3. Common anorectal conditions: Part II. Lesions;Pfenninger;Am. Fam. Physician,2001
4. Textbook of Family Medicine,2011
5. Bedside emergency ultrasonography in the evaluation of a perirectal abscess;Chandwani;Am. J. Emerg. Med.,2004