In late 2010, Jean-Paul Clozel, CEO of the Swiss biotech pharmaceuticals firm Actelion, looks back on a successful decade. The small venture that he had started with a few of his scientist colleagues in the late 1990s to discover novel medicine in a research-driven organisation had grown into...

A puzzling feature of many medical innovations is that they simultaneously appear to reduce unit costs and increase total costs. We consider this phenomenon by examining the diffusion of percutaneous transluminal coronary angioplasty (PTCA) -- a treatment for coronary artery disease -- over the...

A puzzling feature of many medical innovations is that they simultaneously appear to reduce unit costs and increase total costs. We consider this phenomenon by examining the diffusion of percutaneous transluminal coronary angioplasty (PTCA) -- a treatment for coronary artery disease -- over the...