[1] Univ Med Ctr Hamburg Eppendorf, Sect Trop Med, D-20359 Hamburg, Germany
[2] Univ Munich, Dept Infect Dis & Trop Med, D-80802 Munich, Germany
[3] Oslo Univ Hosp, Dept Infect Dis, NO-0424 Oslo, Norway
[4] Univ Oslo, NO-0424 Oslo, Norway
[5] Harbor Hosp, Inst Trop Dis, NL-3011 TG Rotterdam, Netherlands
[6] Addenbrookes Hosp, Dept Infect Dis, Cambridge, England
[7] Univ Hosp Geneva, Div Int & Humanitarian Med, CH-1211 Geneva 14, Switzerland
[8] Univ Geneva, CH-1211 Geneva 14, Switzerland
[9] Univ Zurich, Ctr Travel Med, World Hlth Org Collaborating Ctr Travellers Hlth, Inst Social & Prevent Med,Div Epidemiol & Communi, CH-8001 Zurich, Switzerland
[10] Univ Brescia, Univ Div Infect & Trop Dis, Brescia, Italy
[11] Spedali Civili Gen Hosp, Brescia, Italy
[12] Hosp Univ Ramon y Cajal, Trop Med & Clin Parasitol Infect Dis Dept, Madrid 28034, Spain
[13] Aix Marseille Univ, Univ Hosp Inst Infect Dis, Trop Med Unit, F-13005 Marseille, France
[14] Assistance Publ Hop Marseille, F-13005 Marseille, France
[15] Bernhard Nocht Inst Trop Med, Sect Clin Res, D-20359 Hamburg, Germany