“…The majority of the studies (13 studies) were conducted more than 10 years ago (1988–2003) [ 22 , 24 , 31 , 33 , 34 , 36 – 43 ], with 11 studies published in the last ten years (2006–2017) [ 19 , 20 , 23 , 26 , 30 , 32 , 35 , 44 – 47 ]. Included studies were 10 cross-sectional studies [ 23 , 24 , 30 , 32 , 33 , 36 , 38 , 41 – 43 ], 11 cohort/registry-based studies [ 22 , 26 , 31 , 34 , 35 , 37 , 39 , 44 – 47 ] and three case-control studies [ 19 , 20 , 40 ]. Eleven studies examined aspects of physical health, including general health, [ 19 , 20 , 26 , 30 , 31 , 35 , 39 , 44 – 47 ], eight studies examined somatic complaints/reactions [ 24 , 32 , 33 , 36 , 37 , 40 , 42 , 43 ], three studies examined psychosomatic health outcomes [ 22 , 23 , 41 ], while the remaining two studies examined both physical and psychosomatic health outcomes [ 34 , 38 ].…”