TY - RPRT TI - Decrease in analgesic effect of nifedipine following chronic morphine administration. AU - T Ohnishi AU - K Saito AU - K Matsumoto AU - M Sakuda AU - R Inoki PY - 1988 DO - 10.1016/0014-2999(88)90270-1 UR - https://pubmed.ncbi.nlm.nih.gov/3220117/ ID - 3220117 ER -