Study ID	Study Type	Country / Region	Multi‐centre	Multi‐country	Single‐centre	Single‐country
Arathoon 2002	Treatment	South America	Yes			Yes
Chavanet 1992	Treatment	France			Yes	Yes
de Repentigny 1996	Treatment	Canada	Yes			Yes
De Wit 1989	Treatment	Belgium			Yes	Yes
De Wit 1993	Treatment	Belgium			Yes	Yes
De Wit 1997	Treatment	Belgium; UK; France	Yes	Yes
De Wit 1998	Treatment	Belgium			Yes	Yes
Graybill 1998a	Treatment	USA	Yes			Yes
Hamza 2008	Treatment	Tanzania			Yes	Yes
Hernandez 1994	Treatment	Spain	Yes			Yes
Linpiyawan 2000	Treatment	Thailand			Yes	Yes
Murray 1997	Treatment	USA	Yes			Yes
Nyst 1992	Treatment	Zaire			Yes	Yes
Phillips 1998a	Treatment	Austria; Belgium; Canada; UK; Netherlands; Spain	Yes	Yes
Pons 1993	Treatment	USA	Yes			Yes
Pons 1997	Treatment	USA	Yes			Yes
Redding 1992	Treatment	USA			Yes	Yes
Smith 1991	Treatment	UK			Yes	Yes
Van Roey 2004	Treatment	Uganda	Yes			Yes
Vazquez 2002	Treatment	USA			Yes	Yes
Vazquez 2006	Treatment	Europe; Latin America; Canada; Africa	Yes	Yes
Wright 2009	Treatment	South Africa			Yes	Yes
Goldman 2005	Prevention	USA	Yes		Yes
Just‐Nubling 1991a	Prevention	Germany			Yes	Yes
Leen 1990	Prevention	UK			Yes	Yes
MacPhail 1996	Prevention	USA			Yes	Yes
Marriott 1993	Prevention	Australia			Yes	Yes
McKinsey 1999	Prevention	USA	Yes			Yes
Nittayananta 2008	Prevention	Thailand			Yes	Yes
Pagani 2002	Prevention	Switzerland			Yes	Yes
Revankar 1998	Prevention	USA	Yes			Yes
Schuman 1997	Prevention	USA	Yes			Yes
Stevens 1991	Prevention	USA			Yes	Yes