TY  - CHAP
M1  - Book, Section
TI  - Multifetal Pregnancy
A1  - Cunningham, F. Gary
A1  - Leveno, Kenneth J.
A1  - Dashe, Jodi S.
A1  - Hoffman, Barbara L.
A1  - Spong, Catherine Y.
A1  - Casey, Brian M.
PY  - 2022
T2  - Williams Obstetrics, 26e
AB  - Multifetal  pregnancies  may  result  from  two  or  more  fertilization  events,  from  a  single  fertilization  followed  by  a  splitting  of  the  zygote,  or  both.  In  part  because  of  infertility  therapy,  the  twin  birth  rate  in  the  United  States  was  3.2  percent  in  2019.  For  higher-order  multifetal  births,  the  number  peaked  in  1998  at  0.2  percent  of  all  births.  Subsequent  efforts  in  the  reproductive  endocrinology  community  to  curb  this  rate  have  led  to  declines.  Specifically,  the  rate  of  triplets  or  more  declined  by  55  percent  from  1998  to  2019  (Martin,  2021).  
SN  - 
PB  - McGraw Hill
CY  - New York, NY
Y2  - 2024/04/16
UR  - obgyn.mhmedical.com/content.aspx?aid=1190767311
ER  -