AU - Levin GP, Kestenbaum B TI - GEnetic variants modifying the influence of vitamin d—reply PT - JOUR DP - 2013 TA - JAMA pages = {872-873}, VI - 309 IP - 9 AID - 10.1001/jama.2013.638 [doi] 4100 - http://dx.doi.org/10.1001/jama.2013.638 SO - JAMA March 6, 2013 309(9):872