AGA	androgenic alopecia
CASP7	caspase 7
CD	cluster of differentiation
CTGF	connective tissue growth factor
EGF	epidermal growth factor
ERK	extracellular signal-regulated kinases
FDA	United States Food and Drug Administration
FGF	fibroblast growth factor
KGF	keratinocyte growth factor
PDGF	platelet-derived growth factor
PPP	platelet-poor plasma
PRF	platelet-rich fibrin
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PRP	platelet-rich plasma
ROS	reactive oxygen species
TGF	transforming growth factor
TNF-α	tumor necrosis factor α
VEGF	vascular endothelial growth factor