Ngu - Izithelo Zokuphila
;
Gunter De Win, MD, PhD
"Kunobufakazi obanele bokucabanga ukuthi izithombe zobulili ezingcolile zingathonya ukusebenza kocansi."
"Emaqenjini amancane, izigameko ezibikiwe zezinkinga ze-erectile ziyanda."
"Ngaphezu kwe-70% yeziguli ezinokusetshenziswa okuphezulu [kwezithombe ezingcolile zobulili ezingcolile] ...