1. Travelers with mental problems – the most defenseless travelers;J Travel Med,2017
2. Medical insurance claims associated with international business travelers;Occup Environ Med,1997
3. A survey of the health of British Missionaries. Brit;J Gen Practice,1991
4. Epidemiological experience in the mission of the United Nations Transition Assistance Group (UNTAG) in Namibia;Bull World Health Organ,1992
5. Morbidity in expatriates – a prospective cohort study;Occup Med,2006