B. Ullman
发表
A. Monto,
A S Monto,
B M Ullman,
1974,
JAMA.
H J Montoye,
H. Montoye,
F. Epstein,
1970,
Archives of environmental health.
P. Bass,
R. J. Bolt,
J. Anderson,
1968,
The American Journal of Digestive Diseases.