Mulhall J, Althof SE, Brock GB, Goldstein I, Jünemann K-P, and Kirby M. Erectile dysfunction: Monitoring response to treatment in clinical practice—Recommendations of an international study panel. J Sex Med 2007;4:448–464.

In the original publication of this article, references 20, 40, and 46–50 were incomplete. The complete listings for these references are as follows:

20. Rosenberg M, Tallman C, Sailor N, Ohl D, Hazzard M. Factors affecting male sexual satisfaction in a community based general medical practice. J Sex Med 2006;3(suppl. 3):275. Abstract P-07-315.

40. Porst H, Gilbert C, Collins S, Symonds T, Stecher V. Development and validation of the quality of erection questionnaire. J Sex Med 2006;3(suppl. 3):274. Abstract P-07-314.

46. Jünemann KP, Levinson IP, Creanga DL.Viagra (sildenafil citrate) 100 mg helps men with erectile dysfunction achieve completely hard erections and improved sexual intercourse success, enjoyment, and satisfaction. J Sex Med 2006;3(suppl. 3):252. Abstract P-05-240.

47. King R, Stecher V, Creanga D. Improved erection hardness is associated with sexual enjoyment, satisfaction, and confidence in men with erectile dysfunction treated with Viagra (sildenafil citrate). J Sex Med 2006;3(suppl. 3):252. Abstract P-07-241.

48. Jünemann KP, Jacob G, Burkart M. Interrelationships among erectile function, sexual experience, satisfaction, and confidence. J Sex Med 2006;3(suppl. 3):286. Abstract P-07-352.

49. Collins S, Stecher V, Wang H. Phosphodiesterase type 5 inhibitor-naive men with erectile dysfunction can achieve completely hard and fully functional erections with Viagra (cildenafil citrate). J Sex Med 2007;4(suppl. 2):136. Abstract MP-02-094.

50. Depko A, Kadioglu A, Grohmann W, Levinson IP, Carlsson M, Collins S. Erection hardness and quality correlate with erectile function, emotional well-being, and treatment satisfaction: Double-blind, placebo-controlled multinational trial of Viagra (sildenafil citrate). J Sex Med 2007;4(suppl. 2):134. Abstract MP-02-086.