L. Field
发表
S. Shea,
L. Field,
C. Francis,
1992,
The New England journal of medicine.
S. Shea,
L. Field,
C. Francis,
1992,
American journal of public health.
B. G. Foster,
M. Ganz,
D. Gemson,
1995,
Archives of internal medicine.
J. Batts,
C. Francis,
L. Field,
1991,
The American journal of medicine.