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van der Ent CK, Brackel HJ, Mulder P, Bogaard JM.van der Ent CK, et al.Eur Respir J. 1996 Jun;9(6):1306-13. doi: 10.1183/09031936.96.09061306.Eur Respir J. 1996.PMID: 8804952Free article.
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Drent M, Mulder PG, Wagenaar SS, Hoogsteden HC, van Velzen-Blad H, van den Bosch JM.Drent M, et al. Among authors: mulder pg.Eur Respir J. 1993 Jun;6(6):803-10.Eur Respir J. 1993.PMID: 8339798
van Hal PT, Wijkhuijs JM, Mulder PG, Hoogsteden HC.van Hal PT, et al. Among authors: mulder pg.Cell Prolif. 1995 Oct;28(10):533-43. doi: 10.1111/j.1365-2184.1995.tb00042.x.Cell Prolif. 1995.PMID: 7488673