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Peña AS, Endtz HP, Offerhaus GJ, Hoogenboom-Verdegaal A, van Duijn W, de Vargas N, den Hartog G, Kreuning J, van der Reyden J, Mouton RP, et al.Peña AS, et al. Among authors: offerhaus gj.Digestion. 1989;44(3):131-41. doi: 10.1159/000199902.Digestion. 1989.PMID: 2628136