Efficacy of 12 Hourly Controlled-Release Condeine Compared with as Required Dosing of Acetaminophen Plus Codeine in Patients with Chronic Low Back Pain

by Martin E Hale, Kevin L Speight, Zoltan Harsanyi, Tad Iwan, N Susan Slagle, Peter G Lacouture, Andrew C Darke
Published 1997-01-01