RT Journal Article SR Electronic T1 Patient-Controlled Analgesia by M. Harmer, M. Rosen, and M. D. Vickers JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 352 OP 353 VO 54 IS 4 A1 Millar, Ronald A. YR 1987 UL http://www.ccjm.org/content/54/4/352.2.abstract AB