Facial hair, sex and face-masks.
Plaat
F S
FS
D000765:Anesthesia, Conduction; D000773:Anesthesia, Obstetrical; D005260:Female; D006197:Hair; D006801:Humans; D017757:Infectious Disease Transmission, Professional-to-Patient / Q000517:prevention & control*; D008297:Male; D008397:Masks; D011247:Pregnancy; D012727:Sex Characteristics