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Klamt A, Di Loreto A, Valle RD, Lukashok HP, Robles-Medranda C.Klamt A, et al.Endosc Ultrasound. 2012 Oct;1(3):162-4. doi: 10.7178/eus.03.008.Endosc Ultrasound. 2012.PMID: 24949355Free PMC article.