Controlled substance treatment contract.
Siegel
S E
SE
D000701:Analgesics, Opioid / Q000008:administration & dosage*; D002908:Chronic Disease; D006261:Headache / Q000188:drug therapy; D006801:Humans; D010146:Pain / Q000188:drug therapy*; D010817:Physician-Patient Relations
D000701:Analgesics, Opioid