Anal fissure.
D001003:Anal Canal; D001004:Anus Diseases; D005401:Fissure in Ano; D006801:Humans; D014456:Ulcer
ANUS/diseases; ULCER
Proc R Soc Med. 1952 Jun;45(6):389-91
14941852
Aust N Z J Surg. 1952 Feb;21(3):212-3
14904331