%0 Journal Article %T Typhoid Fever in Group Travelers: Opportunity for Studying Vaccine Efficacy %A Cobelens, Frank G.J. %A Kooij, Saskia %A Warris‐Versteegen, Anita %A Visser, Leo G. %J Journal of Travel Medicine %V 7 %N 1 %P 19-24 %@ 1195-1982 %D 2000-01-01 %I B.C. Decker Inc. %~ DeepDyve