The patients will then be assigned to one of two arms through the process of selecting a ballot among a group of ballots marked with the protocols and stored in a dark bag. Prior to beginning the two protocols, a baseline measurement will be taken of the outcomes related to the study's objectives (EHS, IIEF-5 and doppler measurement of blood flow in the cavernous artery). In accordance with the results from the randomization process, each subject will be treated by one of the protocols mentioned in the corresponding section.