TY - GEN AU - Tilstone,W J AU - Reavey,P C TI - Letter: Concentration of morphine equivalent in urine SN - 0009-9236 PY - 1975///0701 KW - Humans KW - Kidney KW - metabolism KW - Kinetics KW - Methaqualone KW - blood KW - Morphine KW - urine N1 - Publication Type: Journal Article ER -