Establishment and Clinical Application of the Concept of Invalid Extraction Rates in Follicular Unit Extraction
Ming Lei,1 Guang-Yuan Yu,2 Yong-Gang Zhao,3 Ji-Ping Wang,1 Su-Yun Feng1 1Center of Hair Transplantation, Department of Burn and Plastic Surgery, The Fourth Medical Center of the General Hospital of PLA, Beijing, People’s Republic of China; 2Department of Dermatology, The Fourth Medical Center of the General Hospital of PLA, Beijing, People&rs