https://tgldcdp.tg.org.au/viewTopic?etgAccess=true&guidelinePage=Gastrointestinal&topicfile=c_GIG_Gastro-oesophageal-reflux-in-adultstopic_1&guidelinename=auto&sectionId=c_GIG_Functional-constipation-in-adultstopic_5#c_GIG_Functional-constipation-in-adultstopic_5