title: The changing relative contribution of operator salary and hardware costs to echocardiography--a historical perspective.
authors: International Centre for Circulatory Health, Imperial College London, 59 North Wharf Road, London W2 1LA, UK. Electronic address: alexandra.nowbar09@imperial.ac.uk.
authors: Alexandra N
authors: AN
authors: Nowbar
authors: Graham D
authors: GD
authors: Cole
authors: Darrel P
authors: DP
authors: Francis
mesh_terms: D004452:Echocardiography / Q000266:history*; D006282:Health Personnel / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D012456:Salaries and Fringe Benefits / Q000266:history*; D006113:United Kingdom
keywords: Cost; Echocardiography; Economics; Salary