“…Table 1 shows that the quality scores of the included studies ranged from 2 to 7, with a median of 5. Thirty-two studies [16, 18, 29–31, 33–35, 37–40, 44, 45, 47–49, 51, 52, 54, 55, 61, 62, 64–66, 70, 73–77] were considered high quality and the others [25–28, 31, 36, 41–43, 46, 50, 53, 56–60, 63, 67–69, 71, 72] were low quality.…”