Conditions: Scoliosis; Adolescence; Pain After Surgery; Analgesia, Patient-controlled
Interventions: Drug: Tegileridine; Drug: morphine
Sponsors: Peking Union Medical College Hospital
Not yet recruiting Conditions: Scoliosis; Adolescence; Pain After Surgery; Analgesia, Patient-controlled
Interventions: Drug: Tegileridine; Drug: morphine
Sponsors: Peking Union Medical College Hospital
Not yet recruiting