“…[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] All studies were from high income countries. Six studies (seven articles) were from the United States, 11,15,18,21,[23][24][25] two from the Netherlands, 17,22 and one from each of the following countries: Austria, 16 Canada, 20 Denmark, 26 Italy, 12 Norway, 13 Singapore, 19 and United Kingdom.…”