J. Koopman
发表
D. Ostrow,
S. Adib,
J. Joseph,
1990,
American journal of public health.
J. Campbell,
J. Koopman,
1975,
The Journal of infectious diseases.
W. Bertrand,
J. Koopman,
L. Jajardo,
1981,
American journal of public health.
J. Koopman,
1979,
The American journal of tropical medicine and hygiene.
J. Koopman,
G. Bergonzoli,
N. Guzmán,
1978,
Boletin de la Oficina Sanitaria Panamericana. Pan American Sanitary Bureau.
J. Koopman,
1978,
American journal of epidemiology.
J. Koopman,
Paho Bulletin,
Pne Umoniae,
2003
.
J. Koopman,
A. Fighetti de Olave,
1980,
Bulletin of the Pan American Health Organization.
J. Koopman,
Ó. Henao,
1978
.
R. Weyant,
J. Koopman,
M. Simon,
1991,
AIDS education and prevention : official publication of the International Society for AIDS Education.
H. Stetler,
J. Koopman,
J. Ibarra,
1992,
Bulletin of the Pan American Health Organization.
A. Monto,
J. Koopman,
J. Koopman,
1985,
American journal of public health.
D. Ostrow,
D. Fletcher,
J. Joseph,
1992,
AIDS Education and Prevention.
J. L. Valdespino-Gómez,
H. Stetler,
J. Koopman,
1988,
Bulletin of the Pan American Health Organization.
J. Koopman,
1981
.