title: Response to the letter to the editor.
authors.forename: H-J
authors.initials: HJ
authors.lastname: Gruss
authors.forename: A
authors.initials: A
authors.lastname: Cockett
authors.forename: R J
authors.initials: RJ
authors.lastname: Leicester
mesh_terms: D002017:Budgets; D002400:Cathartics / Q000191:economics*; D019343:Citric Acid / Q000191:economics*; D003113:Colonoscopy / Q000191:economics*; D006801:Humans; D009942:Organometallic Compounds / Q000191:economics*; D010710:Phosphates / Q000191:economics*; D010847:Picolines / Q000191:economics*; D011092:Polyethylene Glycols / Q000191:economics*
chemical_list: D002400:Cathartics; D009942:Organometallic Compounds; D010710:Phosphates; D010847:Picolines; D019343:Citric Acid; D011092:Polyethylene Glycols