@inbook{inbook, title  = {{Lactulose versus Polyethylene Glycol for Chronic Constipation}},

 publisher = {{John Wiley & Sons, Ltd}},

 url = {{https://doi.org/10.1002/14651858.cd007570 }},

 year = {{2009}},

 month = {{1}},

 author = {{Lee-Robichaud H and Thomas K and Morgan J and Nelson RL}},

 doi = {{10.1002/14651858.cd007570}},

 note = {{Accessed on 2026/02/04}}}