"Models, Econometric." . . "National Bureau of Economic Research" . . "Pharmazeutisches Produkt / Impfung / Rentabilität / Betriebliche Preispolitik / Theorie." . . "Zonder onderwerpscode: economie." . . "Betriebliche Preispolitik" . . "Pharmaceutical Preparations economics." . . "Pharmazeutisches Produkt" . . "Impfung" . . . . "Vaccines economics." . . "Theorie" . . "Rentabilität" . . . . . . . . . . . . "Why are drugs more profitable than vaccines?"@en . "Why are drugs more profitable than vaccines?" . . . . . . . . . . . "Why Are Drugs More Profitable Than Vaccines?" . "Why Are Drugs More Profitable Than Vaccines?"@en . . . . . . . . . . . . . . . . . . "Why are drugs more profitable than vaccines ?" . . "Drug Industry economics." . .