AU - Hampton T TI - VItamin b12 deficiency and folate PT - JOUR DP - 2011 TA - JAMA pages = {366}, VI - 306 IP - 4 AID - 10.1001/jama.2011.1011 [doi] 4100 - http://dx.doi.org/10.1001/jama.2011.1011 SO - JAMA July 27, 2011 306(4):366