“…1A, Supplemental Digital Content 1, http://links.lww.com/SLE/A390). Of the nonrandomized studies, 1 had low risk, 32 15 had medium risk, 12,13,[16][17][18][19][20][21][22][23][24]26,29,30,33 and 4 had a high risk of bias 14,25,27,28 (Supplementary Fig. 1B, Supplemental Digital Content 1, http://links.lww.com/SLE/A390).…”