External use of recombinant human granulocyte-macrophage colony stimulating factor hydrogel to repair thick skin graft donor sites 
Li Chao, Li Shou-ju, Li Yong-tao, Fu Zi-yang, Ren Chang-yin
Chinese Journal of Tissue Engineering Research . 2015, (34): 5458 -5462 .  DOI: 10.3969/j.issn.2095-4344.2015.34.010