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Forsberg A, Widman L, Bottai M, Ekbom A, Hultcrantz R.Forsberg A, et al. Among authors: widman l.Clin Gastroenterol Hepatol. 2020 Nov;18(12):2724-2733.e3. doi: 10.1016/j.cgh.2020.06.010. Epub 2020 Jun 15.Clin Gastroenterol Hepatol. 2020.PMID: 32553903Free article.