title: A knotty problem.
authors.affiliation: Central Manchester Foundation Trust, Manchester, UK.
authors.forename: Katherine A
authors.initials: KA
authors.lastname: McWhirter
authors.affiliation: Central Manchester Foundation Trust, Manchester, UK.
authors.forename: Alistair
authors.initials: A
authors.lastname: Makin
mesh_terms: D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000009:adverse effects* / Q000295:instrumentation; D004322:Drainage; D005260:Female; D006801:Humans; D008875:Middle Aged; D010192:Pancreatic Pseudocyst / Q000601:surgery; D019919:Prosthesis Implantation / Q000009:adverse effects* / Q000295:instrumentation; D015607:Stents / Q000009:adverse effects*