R Steffen. Show Affiliations »
Abstract
Entities: Disease
Mesh: See more » Hepatitis/epidemiologyHepatitis/prevention & controlHumansSwitzerlandTravel
Year: 1977 PMID: 589335 PMCID: PMC1632752 DOI: 10.1136/bmj.2.6101.1543-a
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447