“…The studies selected had been conducted in the USA [ 24 , 28 , 33 – 37 ], Canada [ 2 , 30 , 38 , 39 ], Sweden [ 40 , 41 ], the UK [ 16 , 42 , 43 ], China [ 44 – 46 ] and Austria [ 17 ]. Fifteen of the 21 studies dealt exclusively with patients [ 2 , 17 , 24 , 28 , 29 , 35 , 37 – 42 , 44 – 46 ], three exclusively with health professionals [ 33 , 34 , 36 ], and three considered the views of patients, health professionals and family members (see Table 2 ) [ 16 , 30 , 43 ].…”