Analgesics, Non-Narcotic/therapeutic use; Anti-Inflammatory Agents, Non-Steroidal/therapeutic use; Cyclooxygenase Inhibitors/therapeutic use; Pain, Postoperative/drug therapy; Tolmetin/analogs & derivatives; Absorption; Adult; Analgesics, Non-Narcotic/pharmacokinetics; Analgesics, Non-Narcotic/pharmacology; Analgesics, Opioid/pharmacokinetics; Analgesics, Opioid/pharmacology; Analgesics, Opioid/therapeutic use; Anti-Inflammatory Agents, Non-Steroidal/pharmacokinetics; Anti-Inflammatory Agents, Non-Steroidal/pharmacology; Child; Child, Preschool; Cyclooxygenase Inhibitors/pharmacokinetics; Cyclooxygenase Inhibitors/pharmacology; Dose-Response Relationship, Drug; Humans; Ketorolac; Pain, Postoperative/complications; Pain, Postoperative/prevention & control; Product Surveillance, Postmarketing; Randomized Controlled Trials as Topic; Stress, Physiological/etiology; Stress, Physiological/prevention & control; Tissue Distribution; Tolmetin/pharmacokinetics; Tolmetin/pharmacology; Tolmetin/therapeutic use