title: Trials and tribulations.
authors.affiliation: Evelina Department of Paediatrics, Guy's Hospital, London. edward.baker@gstt.sthames.nhs.uk
authors.forename: Edward
authors.initials: E
authors.lastname: Baker
mesh_terms: D002648:Child; D006331:Heart Diseases / Q000628:therapy*; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D035703:Therapies, Investigational / Q000295:instrumentation / Q000379:methods