An analysis of paternal age and 47,+21 in 35,000 new prenatal cytogenetic diagnosis data from the New York State Chromosome Registry: no significant effect

1987 ◽  
Vol 77 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Philip K. Cross ◽  
Ernest B. Hook
Author(s):  
Marvin S. Swartz ◽  
Jeffrey W. Swanson ◽  
Henry J. Steadman ◽  
Pamela Clark Robbins ◽  
John Monahan

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