prov:value
| - Of the 28 studies included in the review, 9 were undertaken in the United States (3,11,12,17,19,26-28,32) and 8 in Australia (4,7,13-15,36,41,42), with the remaining 11 studies from the United Kingdom, Hong Kong, North Africa, and several European countries, including Finland, Sweden, Denmark, Switzerland, and Germany (2,6,8,10,18,22,23,25,29,33,40) (Table 1, A and B).
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