“…Five were magazines articles (all coming from the USA) [16,[22][23][24]27] and one a viewpoint journal article [25]. All the publications were from high-income countries as follows: nine from the USA [9,16,19,20,[22][23][24]27,39], two from the UK [25,26], two from Canada [17,18] and one from Ireland [21]. The identified review articles were published between 2012 and 9 2016: one in 2012 [20], two in 2013 [23,27], five in 2014 [16,17,21,24,25], two in 2015 [19,22], and four in 2016 [9,18,26,39].…”