Table 1 Total study population by world region, country participation and organizational type (Source: World Health Organization, 2019)

Africa

Congo DR^a, South Africa^b,c, Zambia^c

Kenya

Americas

Brazil^a,b, Canada^a,b,c, Chile^a, Mexico^a, Peru^a, Puerto Rico^a,b, USA^a,b,c, Uruguay^a,b, Venezuela^b

Argentina, Colombia, Costa Rica, Ecuador, El Salvador, Honduras, Panama, Paraguay

Eastern Mediterranean

Egypt^a

Morocco

Europe

Belgium^a,b, Cyprus^a, Czech Republic^a,b, France^a,b, Germany^a, Italy^a,b, Portugal^a, Slovenia^a,b, Spain^a, Sweden^a, Switzerland^a, United Kingdom^a,b

Denmark, Iceland, Ireland, Norway

South East Asia

Nepal^b

India

Western Pacific

Australia^a,b,c, Hong Kong^a, New Zealand^a,b

Japan, Malaysia