concentration of serum osteocalcin(OST),insulin-like growth factor-1(IGF-1),bony alkaline phosphatase (BALP) and urinary deoxypyridinolin: creatinine (DPD/Cr) were measured;

• 检测血骨钙素 (OST)、胰岛素样生长因子 1(IGF 1)、骨碱性磷酸酶 (BALP)和尿脱氧吡啶 (DPD) /尿肌酐 (Cr)水平。