Long Term ( > 6 months)

Africa:
Mali (3 years)
Burkina Faso (6 years)
Niger (2,5 years)

Asia:

India (0,5 year)

Bangladesh (2 years)

South America:

Guatemala (1,5 year)

Europe:
Netherlands

Short Term (1 week - 6 months)

Africa:

Morocco
Senegal
Mali
Burkina Faso
Niger
Benin
Togo
Rwanda
Burundi
Malawi
Uganda
Tanzania
Kenya
Mozambique

Asia:

Philippines
India
Bangladesh
Nepal
China

South-America:

Guatemala