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Kruis, Wolfgang, Nguyen, Gia P. and Leifeld, Ludger (2016). German Guidelines. J. Clin. Gastroenterol., 50. S. S47 - 3. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1539-2031
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Kruis, Wolfgang, Nguyen, Gia P. and Leifeld, Ludger (2016). German Guidelines. J. Clin. Gastroenterol., 50. S. S47 - 3. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1539-2031