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Cobelens FG, Groen J, Osterhaus AD, Leentvaar-Kuipers A, Wertheim-van Dillen PM, Kager PA.Cobelens FG, et al. Among authors: groen j.Trop Med Int Health. 2002 Apr;7(4):331-8. doi: 10.1046/j.1365-3156.2002.00864.x.Trop Med Int Health. 2002.PMID: 11952949Free article.