Resident, fellow Umeå University, 1968-1974, associate professor, 1976-1978. Visiting assistant professor University Minnesota, Minneapolis, 1975-1976. Director research Pharmacia, Uppsala, Sweden, 1979-1984.
Professor Linköping University, 1984-1999, chairman department pediatrics, 1984—1996. Executive director Center for Allergy Research Karolinska Institute, Stockholm, 1999—2003. With Swedish Military, 1967-1980.
Chairman regional chapter section immigrants Liberal Party, 1993—1998. Fellow: German Allergology Society (correspondent), American Academy Allergy and Immunology (correspondent). Member: European Academy Allergy and Clinical Immunology, Estonian Pediatrics Association (honorary), Finnish Allergology Society (honorary), South African Pediatrics Association (honorary), Scandinavian Pediatrics Federation (president 1992—2000).
1975 - 1976
1979 - 1984
1999 - 2003
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