A study to determine the nitroglycerin ointment dose and dosing interval that best promote the healing of chronic anal fissures

H. Randolph Bailey, David E. Beck, Richard P. Billingham, Sander R. Binderow, Lester Gottesman, Tracy L. Hull, Sergio W. Larach, David A. Margolin, Jeffrey W. Milsom, Fabio M. Potenti, Janice F. Rafferty, Dennis S. Riff, Lawrence R. Sands, Anthony Senagore, Michael J. Stamos, Laurence F. Yee, Tonia M. Young-Fadok, Robert D. Gibbons