Letter to the Editor
The opportunity cost of funding new medicines: an attempt to measure the invisible
El coste de oportunidad de financiar nuevos medicamentos: un intento de medir lo invisible
a University of Las Palmas de Gran Canaria, Department of Quantitative Methods in Economics and Management, Canary Islands, Spain
b Pennsylvania State University, Department of Health Policy and Administration, University Park, Pennsylvania, United States of America
c University of Alberta, School of Public Health, Edmonton, Alberta, Canada
d University of York, Centre for Health Economics, York, United Kingdom
