Combination of Oral Tramadol, Acetaminophen and 1% Lidocaine Induced Periprostatic Nerve Block for Pain Control During Transrectal Ultrasound Guided Biopsy of the Prostate: A Prospective, Randomized, Controlled Trial John Pendletona, Joseph Costaa, Peter Wludykaa, b, Dolly M. Carvina, Charles J. Rossera
The Journal of Urology
Volume 176, Issue 4, October 2006, Pages 1372–1375