Dorsal penile nerve block with ropivacaine versus intravenous tramadol for the prevention of catheter-related bladder discomfort: study protocol for a randomized controlled trial
Crossref DOI link: https://doi.org/10.1186/s13063-015-1130-2
Published Online: 2015-12-30
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Li, Jing-yi
Liao, Ren