Table 1.

PICO criteria.

Patients = women and men with androgenic alopecia	Descriptions: female pattern hair loss, male pattern hair loss, female androgenic alopecia, male androgenic alopecia, alopecia in women, alopecia in men.
Interventions = treatment with stem cells	Descriptions: ADSC, HFSC, BMSC.
Comparison	Descriptions: placebo, different treatments.
Outcomes	Objective measurement of hair density.

ADSC, adipose-derived stem cell; BMSC, bone marrow stromal cell; HFSC, hair follicular stem cells; PICO, patient/population, intervention, comparison, and outcomes.