The effect of smoking in pregnancy on maternal serum alpha-fetoprotein, unconjugated oestriol, human chorionic gonadotrophin, progesterone and dehydroepiandrosterone sulphate levels

Author(s):  
H. S. Cuckle ◽  
N. J. Wald ◽  
J. W. Densem ◽  
P. Royston ◽  
G. J. Knight ◽  
...  
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