“…Of the 21 articles included, none scored "yes" on all five questions of the MMAT, while 4 positive answers were given in five articles [23,24,27,28,35], 3 in thirteen articles [19, 20, 25, 26, 29-34, 36, 38, 39], 2 in one article [22], 1 in none of the articles, and none in two of the articles [21,37]. There wasn't a "no" score in ten articles [20,23,24,27,28,30,31,[34][35][36], while nine articles [19,22,26,29,32,33,[37][38][39] received a "no" on one out of five questions. Further, one article [25] scored a "no" on two questions and 1 [21] on four questions.…”