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Plymoth A, Löfdahl CG, Ekberg-Jansson A, Dahlbäck M, Broberg P, Foster M, Fehniger TE, Marko-Varga G.Plymoth A, et al. Among authors: lofdahl cg.Clin Chem. 2007 Apr;53(4):636-44. doi: 10.1373/clinchem.2006.076075. Epub 2007 Feb 15.Clin Chem. 2007.PMID: 17303691
Kraen M, Frantz S, Nihlén U, Engström G, Löfdahl CG, Wollmer P, Dencker M.Kraen M, et al. Among authors: lofdahl cg.Clin Respir J. 2018 Mar;12(3):1061-1067. doi: 10.1111/crj.12628. Epub 2017 Apr 17.Clin Respir J. 2018.PMID: 28294547