RT Journal Article SR Electronic T1 Medroxyprogesterone acetate (Depo-Provera) and bone mineral density loss JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 746 OP 746 DO 10.1503/cmaj.050158 VO 172 IS 6 A1 Eric Wooltorton YR 2005 UL http://www.cmaj.ca/content/172/6/746.abstract