Ulcerative colitis with reference to its special characteristics in Greece.
D000328:Adult; D000367:Age Factors; D003093:Colitis, Ulcerative / Q000150:complications / Q000453:epidemiology* / Q000401:mortality / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006115:Greece; D006801:Humans; D008297:Male; D011183:Postoperative Complications