“…For the secondary aim, fifty studies reported the proportion of vitamin D deficiency among 14 027 patients with pain conditions and 14 357 without ( 31 – 34 , 36 – 38 , 41 – 43 , 46 , 51 , 52 , 54 – 57 , 59 , 61 , 62 , 65 – 69 , 74 – 77 , 79 – 83 , 87 – 89 , 91 – 99 , 103 , 106 , 107 ) . One publication ( 76 ) reported results from two studies which are included separately in the current meta-analysis (Supplement 2, Supplementary Table 4).…”