Serum levels of human placental lactogen and human chorionic gonadotropin in early pregnancy: A maturational index of the placenta

1976 ◽  
Vol 126 (6) ◽  
pp. 707-711 ◽  
Author(s):  
Louis L. Peeters ◽  
James A. Lemons ◽  
Gordon D. Niswender ◽  
Frederick C. Battaglia
2016 ◽  
Vol 105 (5) ◽  
pp. 1255-1260 ◽  
Author(s):  
Andrea Ciavattini ◽  
Giovanni Delli Carpini ◽  
Nicolò Clemente ◽  
Lorenzo Moriconi ◽  
Chiara Gentili ◽  
...  

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