Conditioning mechanisms in drug dependence.
O'Brien
C
C
Dept. Psychiatry, U. of Pennsylvania/VA Medical Center, Philadelphia 19104-6178.
Childress
A R
AR
Ehrman
R
R
Robbins
S
S
Mclellan
A T
AT
D000818:Animals; D003213:Conditioning, Psychological / Q000502:physiology*; D006801:Humans; D012008:Recurrence; D019966:Substance-Related Disorders / Q000523:psychology*