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van den Boogert J, van Hillegersberg R, de Bruin RW, Tilanus HW, Siersema PD.van den Boogert J, et al. Among authors: siersema pd.Scand J Gastroenterol. 1998 May;33(5):449-53. doi: 10.1080/00365529850171981.Scand J Gastroenterol. 1998.PMID: 9648981Review.No abstract available.
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Hinnen P, de Rooij FW, Hop WC, Edixhoven A, van Dekken H, Wilson JH, Siersema PD.Hinnen P, et al. Among authors: siersema pd.J Photochem Photobiol B. 2002 Aug;68(1):8-14. doi: 10.1016/s1011-1344(02)00324-x.J Photochem Photobiol B. 2002.PMID: 12208031Clinical Trial.