1. Hepatitis A vaccines;Wkly Epidemiol Rec,2000
2. Health Information for International Travel, 2005–2006,2005
3. International Travel and Health,2005
4. Health problems after travel to developing countries;Steffen;J Infect Dis,1987
5. Infection with hepatitis A and B viruses in French volunteers working in tropical Africa;Larouze;Am J Epidemiol,1987