(Q36579724)
Statements
1 reference
Letter: Prospective data on risk of Down syndrome in relation to maternal age. (English)
1 reference
Letter: Prospective data on risk of Down syndrome in relation to maternal age (English)
M. A. Ferguson-Smith
1 July 1976
1 reference
1 reference
7979
1 reference
252
1 reference
Identifiers
1 reference
1 reference