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Association of constipation with neurologic diseases.
Johanson JF, Sonnenberg A, Koch TR, McCarty DJ. Johanson JF, et al. Among authors: sonnenberg a. Dig Dis Sci. 1992 Feb;37(2):179-86. doi: 10.1007/BF01308169. Dig Dis Sci. 1992. PMID: 1735333
Clinical epidemiology of chronic constipation.
Johanson JF, Sonnenberg A, Koch TR. Johanson JF, et al. Among authors: sonnenberg a. J Clin Gastroenterol. 1989 Oct;11(5):525-36. doi: 10.1097/00004836-198910000-00008. J Clin Gastroenterol. 1989. PMID: 2551954 Review.
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