scholarly journals Medical genetics: advances in brief: Prevention of the first occurrence of neural-tube defects by periconceptual vitamin supplementation

1993 ◽  
Vol 30 (4) ◽  
pp. 349-349
Author(s):  
A. Norman
1981 ◽  
Vol 56 (12) ◽  
pp. 911-918 ◽  
Author(s):  
R W Smithells ◽  
S Sheppard ◽  
C J Schorah ◽  
M J Seller ◽  
N C Nevin ◽  
...  

The Lancet ◽  
1980 ◽  
Vol 315 (8164) ◽  
pp. 339-340 ◽  
Author(s):  
R.W. Smithells ◽  
S. Sheppard ◽  
C.J. Schorah ◽  
M.J. Seller ◽  
N.C. Nevin ◽  
...  

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