- As per medical record, moderate erectile functioning pre-surgery (i.e., 15 or greater on the IIEF Erectile Function Domain (EFD) score, or graded their erections as a 1 or 2 on the standard 5 point Urology Erectile Function scale, or have a score of 6 or greater on the 1-10 pre-surgery erectile function scale on the SMRP assessment or have a total score of 15 or greater on items 2-7 on the Prostrate Quality of Life Survey: Sexual Domain)