1) Kyoko Namikawa Tadayuki Iida. Kazunobu OuchL Mikio Kimura. Knowledge Attitudes, and Practices of Japanese Travelers on Infectious Disease Risks and Immunization Uptake. J Travel Med.2010;17:171-175
2) Koen Van Herck Francesco Castelli, J ane Zuckerman, Hans Nothdurft, Pierre Van Damme, Atti-La Dahlgren.Panagiotis Gargalianos, Rogelio Lopez-Velez, David Overbosch EricCaumes, Eric Walker, Sandra Gisler, Robert Steffen. Knowledge, Attitudes and Practices in Travel-related Infectious Diseases:The European Airport Survey. J Travel Med.2004;11: 3-8
3) Davidson H. Hamer. Bradley A. ConnoL Travel Health Knowledge, Attitudes and Practices among United States Travelers. J Travel Med.2004;11:23-26
4) Robert Steffen, Martin Rickenbach Urs Wilhelm, AndreeHelminger, Meinrad Schar. Health problems after travel to developing countries, J Infect Dis1987;156:84-91