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Softley A, Clamp SE, Watkinson G, Bouchier IA, Myren J, de Dombal FT.Softley A, et al.Scand J Gastroenterol Suppl. 1988;144:20-3.Scand J Gastroenterol Suppl. 1988.PMID: 3165551
Softley A, Clamp SE, Bouchier IA, Myren J, Watkinson G, de Dombal FT.Softley A, et al.Scand J Gastroenterol Suppl. 1988;144:24-6.Scand J Gastroenterol Suppl. 1988.PMID: 3165552
Softley A, Myren J, Clamp SE, Bouchier IA, Watkinson G, de Dombal FT.Softley A, et al.Scand J Gastroenterol Suppl. 1988;144:27-30.Scand J Gastroenterol Suppl. 1988.PMID: 3165553
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