Serum 25(OH)vitamin D level and Its correlation with bone mineral density in girls with Adolescent Idiopathic Scoliosis (AIS). Issue 1 (December 2015) - Lam, Tsz; Ng, Bobby; Lee, Kwong; Hung, Alec; Tam, Elisa; Cheung, Franco; Tsang, Echo; Cheng, Jack