Journal Article Plasma concentrations of sulfadoxine-pyrimethamine, mefloqine and its main metabolite after regular malaria prophylaxis for two years Get access Urban Hellgren, Urban Hellgren 1Department of Infectious Diseases, Karolinska Institute, Roslagstull Hospital, Box 5651, S-114 89 Stockholm, Sweden Search for other works by this author on: Oxford Academic PubMed Google Scholar Victor Hugo Angel, Victor Hugo Angel 2Project Basse-Naval, Bahia Malaga, Buenaventura, Colombia Search for other works by this author on: Oxford Academic PubMed Google Scholar Yngve Bergqvist, Yngve Bergqvist 3Department of Clinical Chemistry, Falun Central Hospital, Falun, Sweden Search for other works by this author on: Oxford Academic PubMed Google Scholar José Segundo Forero-Gomez, José Segundo Forero-Gomez 4Ministry of Health, Campanas Directas SEM, Bogota, Colombia Search for other works by this author on: Oxford Academic PubMed Google Scholar Lars Rombo Lars Rombo 1Department of Infectious Diseases, Karolinska Institute, Roslagstull Hospital, Box 5651, S-114 89 Stockholm, Sweden Search for other works by this author on: Oxford Academic PubMed Google Scholar Transactions of The Royal Society of Tropical Medicine and Hygiene, Volume 85, Issue 3, May-June, Pages 356–357, https://doi.org/10.1016/0035-9203(91)90287-9 Published: 01 June 1991 Article history Received: 03 January 1991 Accepted: 22 January 1991 Published: 01 June 1991