“…Eight studies [8,12,15,17,20,24,30,35] were prospective studies and the others [13, 14, 16, 18, 19, 21-23, 25-29, 31-34, 36] were retrospective studies. Five studies [12,15,23,24,33] were multi-center studies, and the others [8, 13, 14, 16-22, 25-32, 34-36] were described as single-center. The average age varied between 57 and 81, and the proportion of men varied between 46% and 65% in these studies.…”