“…Overall, twenty-two studies were originated in Europe, North America, or Australia [20, 21, 35, 37–40, 42–45, 47, 48, 50, 51, 54–60, 63], two studies in Brazil [49, 52] and Japan [61, 62], respectively and, one study each in Korea [36], Taiwan [41], India[53] and Turkey [46]. The quality of the reporting varied across the papers.…”