J. M. Piper
发表
W. Ray,
R. Fought,
M. Griffin,
1990,
American journal of epidemiology.
E. Mitchel,
J. M. Piper,
1991,
Paediatric and perinatal epidemiology.
S. Jocums,
S. Entman,
E. Mitchel,
1995,
American journal of preventive medicine.
W. Ray,
E. Mitchel,
J. M. Piper,
1996,
Family planning perspectives.
W. Ray,
E. Mitchel,
J. M. Piper,
1996,
Medical care.
W. Ray,
E. Mitchel,
J. M. Piper,
1997,
American journal of preventive medicine.
W. Ray,
E. Mitchel,
J. M. Piper,
1994,
American journal of public health.
W. Ray,
E. Mitchel,
J. M. Piper,
1994,
American journal of preventive medicine.
W. Ray,
M. Griffin,
J. Piper,
1990,
JAMA.
W. Ray,
M. Griffin,
J. Piper,
1991,
Annals of internal medicine.
W A Ray,
W. Ray,
M. Griffin,
1991,
Annals of internal medicine.
W. Ray,
E. Mitchel,
J. Piper,
1993,
Obstetrics and gynecology.
E. Mitchel,
M. Adams,
J. Piper,
1993,
American journal of epidemiology.
J. M. Piper,
1991,
American journal of public health.