title: Competition in a structurally changing pharmaceutical market: some health economic considerations.
mesh_terms: D003132:Commerce; D003363:Cost Control; D004345:Drug Industry / Q000191:economics*; D004358:Drug Therapy / Q000191:economics*; D004526:Efficiency; D006291:Health Policy; D006801:Humans; D008962:Models, Theoretical; D010361:Patients; D012109:Research Support as Topic; D013997:Time Factors