Gunter De Win, MD, PhD
"Pali umboni wokwanira wotsimikizira kuti zolaula zimatha kukhudza kugonana."
"M'magulu ang'onoang'ono, chiwerengero cha mavuto a erectile chikuwonjezeka."
"Oposa 70% ya odwala omwe ali ndi vuto [logwiritsa ntchito zolaula] ...