“…We also excluded reviews only, case studies, abstracts at meetings when later published as a peerreviewed paper, and papers focused on surgical outcomes. We included 54 studies on Caucasians (most of them in Europe, North America and Australia), 9,10,14,36-42,44,48-53,64-101 11 studies from the Middle East, 5,16,23,[102][103][104][105][106][107][108][109] 9 on Hispanics (most of them from Latin America), 15,[110][111][112][113][114][115][116][117] 41 from East Asia, 12,13,43,46,56,58, 23 from South Asia, 33,35,45,47,54,57,[153][154][155][156][157][158][159][160][161][162][163][164][165][166]…”