Original Research

The Validity of Danish Prescription Data to Measure Use of Aspirin and Other Non-Steroidal Anti-Inflammatory Drugs and Quantification of Bias Due to Non-Prescription Drug Use

Gaster N, Hallas J, Pottegård A, Friis S, Schmidt M

Clinical Epidemiology 2021, 13:569-579

Published Date: 13 July 2021