P. Effah
发表
K. Appiah,
P. Abor,
P. Effah,
2016,
Value in health regional issues.
R. Lugg,
R. Mwaipopo,
J. Opare,
2010
.
P. Effah,
1998
.
W. Hofman,
P. Effah,
2010
.