title: Needles: what is available, does size matter?
authors.affiliation: Department of Medicine, National University Hospital, Singapore.
authors.forename: Khek-Yu
authors.initials: KY
authors.lastname: Ho
mesh_terms: D019160:Endosonography / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D009339:Needles