- Author: World Health Organization
- Language: English
- Year: 2003
- Author: World Health Organization 2010
- Language: English
- Author: World Health Organization
- Language: English
- Year: 2011
- Author: World Health Organization
- Language: English
- Year: 2008
- Author: World Health Organization
- Language: English
- Year: 2003
- Author: Erik Blas Anand Sivasankara Kurup World Health Organization
- Language: English
- Year: 2010