Name Info Provider Link
subscription/membership/fee required Ingenta plc https://www.ingentaconnect.com/openurl?genre=article&issn=0025-7974&volume=103&issue=36&spage=e39259&aulast=Jiang
Constipation free resource MedlinePlus Health Information https://medlineplus.gov/constipation.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=39252301.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/39252301/