Changes in serum levels of fibroblast growth factor-2, hypoxia-inducible factor-1alpha and vascular endothelial growth factor in patients with avascular necrosis of femoral head treated by enriched autologous bone marrow stem cell transplantation combined with core decompression Chinese Journal of Tissue Engineering Research . 2020, (1): 14 -14 .  DOI: 10.3969/j.issn.2095-4344.2002