TY - GEN AU - Marks,C G TI - Anal lesions in Crohn's disease SN - 0035-8843 PY - 1990///0723 KW - Crohn Disease KW - complications KW - Fissure in Ano KW - etiology KW - Hemorrhoids KW - Humans KW - Proctitis KW - Rectal Fistula N1 - Publication Type: Journal Article; Review ER -