Matava, MBCHB, C. T.; Crawford, MBBS, M. W.; Pehora, RN, C.; Naser, MD, B.; McDonnell, MBCHB, C. Early Postoperative Patient-Controlled Analgesia Ratio Predicts 24-Hour Morphine Consumption and Pain in Children Undergoing Scoliosis Surgery. J of Opioid Management 2014, 10, 39-45.