title: [Problems in the anal region].
authors.affiliation: , .
authors.forename: Peter
authors.initials: P
authors.lastname: Stiefelhagen
mesh_terms: D001004:Anus Diseases / Q000175:diagnosis*; D001005:Anus Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male