TY - GEN AU - Vorsanger,Gary J AU - Xiang,Jim AU - Gana,Theophilus J AU - Pascual,Maria Luz G AU - Fleming,R Rosanna B TI - Extended-release tramadol (tramadol ER) in the treatment of chronic low back pain SN - 1551-7489 PY - 2008///0708 KW - Adult KW - Aged KW - Aged, 80 and over KW - Analgesics, Opioid KW - administration & dosage KW - Chronic Disease KW - Delayed-Action Preparations KW - Double-Blind Method KW - Female KW - Humans KW - Low Back Pain KW - drug therapy KW - Male KW - Middle Aged KW - Tramadol N1 - Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't UR - https://doi.org/10.5055/jom.2008.0013 ER -