“…The characteristics of the included studies are summarized in Table 1. The studies were from Belgium [29], China [30,31], Germany [32], India www.journals.viamedica.pl [33], Iran [34,35], Italy [36][37][38], Philippines [39], Spain [40,41], Switzerland [42], South Korea [43], Turkey [44,45], Russia [46], The Netherlands [47], UK [48,49] and USA [50,51]. Overall, mean age was 60.8 (SD 15.9) years and 53.8% were men.…”