TY  - BOOK
ED  - World Health Organization
TI  - International travel and health : : situation as on 1 January 2009
PY  - 2009///
CY  - Geneva : 
PB  - WHO, 
KW  - Communicable diseases
KW  - prevention and control
KW  - Travel
KW  - Vaccination
KW  - Risk Factors
ER  -