Authors: Chevat, C Pena, BM Al, MJ Rutten, FFH

Citation: C. Chevat et al., Healthcare resource utilisation and costs of treating NSAID-associated gastrointestinal toxicity - A multinational perspective, PHARMACOECO, 19(1), 2001, pp. 17-32

Authors: Giuliano, F Pena, BM Mishra, A Smith, MD

Citation: F. Giuliano et al., Efficacy results and quality-of-life measures in men receiving sildenafil citrate for the treatment of erectile dysfunction, QUAL LIFE R, 10(4), 2001, pp. 359-369

Authors: Rosen, RC Cappelleri, JC Smith, MD Lipsky, J Pena, BM

Citation: Rc. Rosen et al., Development and evaluation of an abridged, 5-item version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction, INT J IMPOT, 11(6), 1999, pp. 319-326