RT Journal Article SR Electronic T1 Hypovitaminosis D in Systemic Sclerosis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2844 OP 2844 DO 10.3899/jrheum.090439 VO 36 IS 12 A1 GILBERTO CALZOLARI A1 VALERIA DATA A1 RENATO CARIGNOLA A1 ALBERTO ANGELI YR 2009 UL http://www.jrheum.org/content/36/12/2844.2.abstract AB