After deduplication, the literature search yielded 353 potentially relevant publications, 219 of which were selected for full-text screening. The full text of 5 publications could not be retrieved. We excluded 170 publications based on the full-text screening, resulting in 44 studies for final inclusion [1, 5, 8, 12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52]. Cross-checking the reference lists did not yield new publications. The selection process is visualized in Fig. 1.

The characteristics of the 44 included studies are presented in Table 1.

Publications from 9 countries were included. Fifteen publications originated from the United States of America [1, 12, 13, 18, 23, 26,27,28,29,30,31, 35, 36, 38, 51], 10 from the United Kingdom [5, 8, 15,16,17, 20, 21, 25, 49, 50] and 8 from Spain [14, 19, 37, 39,40,41,42, 44]. Other publications originated from Germany [22, 33, 34, 45], Australia [47, 48], Switzerland [24, 43], Ireland [32], Singapore [46], and the Kingdom of Saudi Arabia [52].

Two systematic reviews [8, 14], one guideline [1], and 41 publications reporting original data were included [5, 12, 13, 15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,