Vitamin D in ankylosing spondylitis: review and meta-analysis.
Cai G, Wang L, Fan D, Xin L, Liu L, Hu Y, Ding N, Xu S, Xia G, Jin X, Xu J, Zou Y, Pan F.
Cai G, et al.
Clin Chim Acta. 2015 Jan 1;438:316-22. doi: 10.1016/j.cca.2014.08.040. Epub 2014 Sep 6.
Clin Chim Acta. 2015.
PMID: 25199851
Review.