“…The diagnostic criteria of FD in 9 articles 10,11,[13][14][15][16][17][18]21 either fulfilled or resembled the Rome criteria for FD, 22,23 and reflux type-FD was included in 2 articles. 16,18 In 4 articles, 9,12,19,20 the diagnostic criteria of FD were obscure. Three articles 11,19,20 included patients with IBS symptoms as well as FD symptoms.…”