Included intake surveys
Data available for 26 countries within 9 WHO Regions
Amr A:   USA
Amr B:     Argentina, Mexico
Emr B:     Kuwait
Eur A:     Belgium, Denmark, Finland, France, Germany,
Ireland, Israel, Italy, Norway, UK
Eur B:      Bulgaria
Eur C:      Estonia, Kazakhstan, Latvia, Lithuania, Russian
Fed.
Sear D:    Bangladesh, India
Wpr A:     Australia, Japan, Singapore
Wpr B:     China
No survey data: Afr D, Afr E, Amr D, Emr D, Sear B