RT Journal Article SR Electronic T1 Infant methionine synthase variants and risk for spina bifida JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 86 OP 87 DO 10.1136/jmg.36.1.86 VO 36 IS 1 A1 GARY M SHAW A1 KAREN TODOROFF A1 RICHARD H FINNELL A1 EDWARD J LAMMER A1 DANIEL LECLERC A1 ROY A GRAVEL A1 RIMA ROZEN YR 1999 UL http://jmg.bmj.com/content/36/1/86.1.abstract AB