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Mols CM, Visser ME.Mols CM, et al. Among authors: visser me.PLoS One. 2007 Feb 7;2(2):e202. doi: 10.1371/journal.pone.0000202.PLoS One. 2007.PMID: 17285148Free PMC article.
Titulaer M, Spoelstra K, Lange CY, Visser ME.Titulaer M, et al. Among authors: visser me.PLoS One. 2012;7(5):e37377. doi: 10.1371/journal.pone.0037377. Epub 2012 May 18.PLoS One. 2012.PMID: 22624023Free PMC article.