Letter from Purdue Pharma L.P. to Center for Drug Evaluation and Research (CDER) (re: Competitor's Promotional Advertising - Avinza Capsules visual aid (by Ligand Pharmaceuticals, Inc.) & Duragesic patch (fentanyl transdermal system) direct-to-consumer campaign (by Janssen))
- Publication date
- 24 June 2002
- Publisher