“…Liu et al [3] did not describe the types of OA, and hence those SRs were excluded. Ultimately, 27 articles were included [1,[4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29]]. Descriptions of the included SRs are shown in Table 1.…”