Socio-economic disparities in maternal mortality in China between 1996 and 2006.
Feng
X L
XL
Department of Health Policy and Administration, School of Public Health, Peking University, Beijing, China.
Zhu
J
J
Zhang
L
L
Song
L
L
Hipgrave
D
D
Guo
S
S
Ronsmans
C
C
Guo
Y
Y
Yang
Q
Q