Exposure misclassification as a result of free sample drug utilization in automated claims databases and its effect on a pharmacoepidemiology study of selective COX-2 inhibitors
Susanna Jacobus, Sebastian Schneeweiss, K. Arnold ChanVolume:
13
Year:
2004
Language:
english
Pages:
8
DOI:
10.1002/pds.981
File:
PDF, 111 KB
english, 2004