“…A summary of the review process is presented in Figure 1. All included studies were population-based cohort studies, of which 3 were prospective (17,21,23) and 10 were multicenter studies (6,12,17,(20)(21)(22)(23)(24)26,27). Seven studies were from the United States (n 5 13,136), 4 were from South Korea (n 5 16,984), 1 study was from Spain (n 5 3,535), 1 was from Japan (n 5 1,147), 1 was from the United Kingdom (n 5 1,029), and 1 was from Israel (n 5 544).…”