Three medical specialists named Buga, Amoko, and Ncayiyana interviewed 1,702 girls and 903 boys from the rurals of Transkei, South Africa.
Trīs medicīnas speciālisti — Buga, Amoko un Ncajijana — aptaujāja 1702 meitenes un 903 zēnus no Transkejas lauku apvidiem Dienvidāfrikā.