Ua lelei, e leʻo ni pheromones, ae o isi neurochemicals, ae o nei aliʻi e oʻo atu le feau i le isi itu.
;
Donald S Crain, MD ma Michael T Marshall, MD ma John E Kehoe, MD:
"E foliga mai o loʻo i ai se sootaga i le va o le faʻaogaina o ponokalafi ma le faʻaleagaina o feusuaiga i tamaloloa o loʻo lipotia mai se manaʻoga mo le masturbation i ponokalafi nai lo feusuaiga."
PD69-12 SU'ESU'EGA O GALUEGA FA'ATUFEA MA FAIGA FA'ATUAGA | Tusitala o Urology
www.auajournals.org