TY  - JOUR
A1  - Fuster, Vicente
A1  - Zuluaga, Pilar
A1  - Colantonio, Sonia
A1  - de Blas, Clemente
T1  - Factors Associated with Recent Increase of Multiple Births in Spain
Y1  - 2008
DO  - 10.1375/twin.11.1.70
JF  - Twin Research and Human Genetics
VL  - 11
IS  - 1
SP  - 70
EP  - -76

ER  -