P. Friis
发表
M. Rørdam,
P. Friis,
2001
.
Joint Review of the Health Sector Support Programme (HESSP), Ministry of Health, Government of Kenya
A. Tomkins,
P. Friis,
Bo Vagnby,
1997
.
P. Friis,
H. Stetkær,
2004
.
Tomas Vedsmand,
P. Friis,
1998
.
P. Friis,
1996
.
P. Friis,
2004
.