Sansalone, S., Russo, G. I., Mondaini, N., Cantiello, F., Antonini, G. and Cai, T. (2016) “A combination of tryptophan, Satureja montana, Tribulus terrestris, Phyllanthus emblica extracts is able to improve sexual quality of life in patient with premature ejaculation”, Archivio Italiano di Urologia e Andrologia, 88(3), pp. 171–176. doi: 10.4081/aiua.2016.3.171.