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Sozial- Und Praventivmedizin|January 1, 1997
[Control measures in an influenza pandemic in Switzerland]D Bernasconi, R Steffen
Therapeutische Umschau. Revue Therapeutique|March 1, 1994
[Epidemiology, clinical aspects, prevention and self care in travelers' diarrhea]E Kipfer, R Steffen
Langenbecks Archiv Fur Chirurgie. Supplement II, Verhandlungen Der Deutschen Gesellschaft Fur Chirurgie. Deutsche Gesellschaft Fur Chirurgie. Kongress|January 1, 1989
[Medical aspects of the artificial liver]P Neuhaus, R Steffen
The Journal of Tropical Medicine and Hygiene|June 1, 1994
Stand-by treatment of malaria in travellers: a reviewP Schlagenhauf, R Steffen
Schweizerische Rundschau Fur Medizin Praxis = Revue Suisse De Medecine Praxis|June 7, 1994
[Do's and don'ts in travel medicine advice]R Steffen, I Klopfstein
Bailliere'S Clinical Gastroenterology|April 1, 1987
Travellers' diarrhoeaR Steffen, I Boppart
Schweizerische Medizinische Wochenschrift|August 26, 1978
[Amebiasis--retrospective analysis of 453 cases in the Zürich region]J Stierli, R Steffen
Bulletin De La Societe De Pathologie Exotique (1990)|January 1, 1997
[Reserve treatment for malaria: pros and cons]G Charmot, R Steffen
Therapeutische Umschau. Revue Therapeutique|August 1, 1997
[Melatonin--clinical perspectives in prevention and therapy]A Suhner, R Steffen
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