Research progress on effects and their mechanism of Ligustri Lucidi Fructus in treatment of osteoporosis HPLC fingerprints of crude and processed Ligustri Lucidi Fructus Optimization of processing technology of Ligustri Lucidi Fructus stewed with wine based on analytic hierarchy process and multi-index orthogonal test Study on effect of combination of Epimedii Folium and Ligustri Lucidi Fructus on osteoporosis rats induced by retinoic acid