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Spaan M, van den Belt-Dusebout AW, Burger CW, van Leeuwen FE; OMEGA-project group.Spaan M, et al. Among authors: van leeuwen fe, van den belt dusebout aw.Clin Gastroenterol Hepatol. 2016 May;14(5):729-37.e5. doi: 10.1016/j.cgh.2015.12.018. Epub 2015 Dec 12.Clin Gastroenterol Hepatol. 2016.PMID: 26687912
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de Boer EJ, den Tonkelaar I, Burger CW, van Leeuwen FE; OMEGA-project group.de Boer EJ, et al. Among authors: van leeuwen fe.Menopause. 2005 Sep-Oct;12(5):578-88. doi: 10.1097/01.gme.0000177316.78263.ff. Epub 2005 Sep 1.Menopause. 2005.PMID: 16145312