Longitudinal study of group B streptococcus carriage in pregnancy.
Goodman
J R
JR
Departments of Obstetrics and Gynecology and Microbiology Marshfield Clinic 1000 N. Oak Avenue Marshfield WI 54449 USA.
Berg
R L
RL
Gribble
R K
RK
Meier
P R
PR
Fee
S C
SC
Mitchell
P D
PD