Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleRobert koch-institut.PublicationBundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz, 1998, Vol 41, Issue 12, p564ISSN1436-9990Publication typeArticleDOI10.1007/BF03044519