Vitamin D and rheumatoid arthritis: comment on the letter by Nielen et al.
Cutolo
Maurizio
M
Otsa
Kati
K
Yprus
Maria
M
Seriolo
Bruno
B
D001172:Arthritis, Rheumatoid / Q000097:blood / Q000209:etiology*; D016022:Case-Control Studies; D004957:Estonia; D005260:Female; D006801:Humans; D007558:Italy; D008875:Middle Aged; D012621:Seasons; D012720:Severity of Illness Index; D013472:Sunlight; D014807:Vitamin D / Q000031:analogs & derivatives / Q000097:blood / Q000502:physiology*; D014808:Vitamin D Deficiency / Q000097:blood / Q000150:complications*
D014807:Vitamin D; C104450:25-hydroxyvitamin D