Sildenafil (Viagra) for male erectile dysfunction: a meta-analysis of clinical trial reports
Meta-analyses that include otherwise unpublished randomised trials are uncommon, but are welcome, and can inform in circumstances where information is contradictory. The example of generic tramadol in acute pain, where information on 3,500 patients was made available, explained the results of two studies, one showing that tramadol was a highly efficacious analgesic, the other showing […]