The type 5 phosphodiesterase inhibitor tadalafil influences salivary cortisol, testosterone, and dehydroepiandrosterone sulphate responses to maximal exercise in healthy men - Di Luigi, L; Baldari, C; Sgrò, P; Emerenziani, G P; Gallotta, M C; Bianchini, S; Romanelli, F; Pigozzi, F; Lenzi, A; Guidetti, L (J Clin Endocrinol Metab, 2008)