“…Twelve studies were level II prospective studies [1, 3, 7, 22, 38, 55, 63, 68, 73, 90, 92, 102], while 45 studies were level III retrospective studies or level IV case series [2, 6, 10, 11, 13, 15–20, 24, 25, 30–34, 37, 39, 40, 45, 47, 50, 51, 57, 58, 64–67, 70, 71, 75, 84, 88, 89, 93–96, 98, 99, 103, 104]. No level I studies were identified, and none of the studies were blinded or randomized.…”