RT Journal Article SR Electronic T1 Vitamin D deficiency among Italian children JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1530 OP 1530 DO 10.1503/cmaj.1070134 VO 177 IS 12 A1 Leanne M. Ward MD A1 Isabelle Gaboury, MSc A1 Moyez Ladhani MD A1 Stanley Zlotkin, MD PhD YR 2007 UL http://www.cmaj.ca/content/177/12/1530.1.abstract