TY - RPRT TI - Analgesic effects on endogenous melatonin secretion. AU - K R Lapwood AU - L Bhagat AU - M P Simpson PY - 1997 DO - 10.1111/j.1600-079x.1997.tb00298.x UR - https://pubmed.ncbi.nlm.nih.gov/9062866/ ID - 9062866 ER -