TY  - CHAP
M1  - Book, Section
TI  - Multiple Pregnancy
A1  - Kee Fung, Karen Fung
A2  - Posner, Glenn D.
A2  - Dy, Jessica
A2  - Black, Amanda
A2  - Jones, Griffith D.
Y1  - 2015
N1  - 
T2  - Oxorn-Foote Human Labor & Birth, 6e
AB  - In  1895,  Hellin  described  a  mathematically  simple  rule  for  estimation  of  the  rates  of  twinning  and  conception  of  higher  order  multiples  in  the  general  population.  This  rule,  which  has  been  widely  cited  and  accepted,  proposes  the  following  rates  of  multiple  pregnancy:  
SN  - 
PB  - McGraw-Hill Medical
CY  - New York, NY
Y2  - 2024/04/19
UR  - obgyn.mhmedical.com/content.aspx?aid=1106378081
ER  -