AU  - Czeizel A, Fritz G
TI  - EThics of a randomized trial of periconceptual vitamins
PT  - JOUR
DP  - 1989
TA  - JAMA
pages = {1634},
VI  - 262
IP  - 12
AID  - 10.1001/jama.1989.03430120083026 [doi]
4100  - http://dx.doi.org/10.1001/jama.1989.03430120083026
SO  - JAMA September 22, 1989 262(12):1634