TY  - JOUR
AU  - Fuster Siebert, Vicente
AU  - Zuluaga Arias, Pilar
AU  - Colantonio, S.
AU  - Blas, Clemente de
PY  - 2008
DO  - 10.1375/twin.11.1.70
SN  - 1832-4274
UR  - https://hdl.handle.net/20.500.14352/51415
T2  - Twin research and human genetics
AB  - The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to the...
LA  - spa
M2  - 70
PB  - Cambridge Univ. Press
KW  - EMTREE medical terms: adult
KW  - article
KW  - controlled study
KW  - female
KW  - fertilization
KW  - human
KW  - major clinical study
KW  - maternal age
KW  - multiple pregnancy
KW  - parity
KW  - priority journal
KW  - reproduction
KW  - twin pregnancy
KW  - twin zygosityMeSH: Adult
KW  - Emigrants and Immigrants
KW  - Female
KW  - Humans
KW  - Male
KW  - Marital Status
KW  - Maternal Age
KW  - Multiple Birth Offspring
KW  - Parity
KW  - Pregnancy
KW  - Reproductive Techniques
KW  - Assisted
KW  - Spain
KW  - Triplets
KW  - Twins
TI  - Factors associated with recent increase of multiple births in Spain
TY  - journal article
VL  - 11
ER  -