title: Letter: comment on letter to the editor.
authors.forename: Brend
authors.initials: B
authors.lastname: van Deurzen
authors.forename: Cees W M
authors.initials: CW
authors.lastname: van der Geld
authors.forename: Tamar
authors.initials: T
authors.lastname: Nijsten
authors.forename: Roeland P
authors.initials: RP
authors.lastname: Ceulen
authors.forename: Sarah S
authors.initials: SS
authors.lastname: Tellings
mesh_terms: D006801:Humans; D011092:Polyethylene Glycols / Q000008:administration & dosage*; D012597:Sclerosing Solutions / Q000008:administration & dosage*; D015911:Sclerotherapy; D014648:Varicose Veins / Q000628:therapy*
chemical_list: D012597:Sclerosing Solutions; D011092:Polyethylene Glycols