Table 1.

Countries where the studies were conducted (N=66).

Countries	Studies, n (%)
United States	29 (44)
Canada	13 (20)
Sweden	9 (14)
Norway	4 (6)
The Netherlands	2 (3)
United Kingdom	3 (5)
Germany	2 (3)
New Zealand	1 (2)
Multiple countries	3 (5)