TY - JOUR T1 - Frequent blood donors risk iron deficiency JF - Canadian Medical Association Journal JO - CMAJ SP - 817 LP - 817 DO - 10.1503/cmaj.109-4807 VL - 186 IS - 11 AU - Miriam Shuchman Y1 - 2014/08/05 UR - http://www.cmaj.ca/content/186/11/817.abstract N2 - ER -