“…One study [31] not only reported the outcome of incidence but also mortality. Most studies [16,18–23,25–27,29] were performed in Europe, 4 [24,28,30,31] in Oceania, with only 2 [15,17] in Asia. Four studies [15,16,24,26] were conducted only in male cohort, and the other cohorts [17–23,25,27–31] included male and female.…”