Lewis SJ, Heaton KW (1997). ”Stool form scale as a useful guide to intestinal transit time”. Scand. J. Gastroenterol. 32 (9): sid. 920–4. doi:10.3109/00365529709011203. PMID 9299672.
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ncbi.nlm.nih.gov
Lewis SJ, Heaton KW (1997). ”Stool form scale as a useful guide to intestinal transit time”. Scand. J. Gastroenterol. 32 (9): sid. 920–4. doi:10.3109/00365529709011203. PMID 9299672.