Evaluation and follow-up
The randomization was performed by a medical assistant, while the examiner and the operator were blinded about the randomization process. The operator who delivered the intervention of laser application was under the supervision of different examiners who do not know about the study, just following the treatment regimen.The study period was 4 months (1-month treatment and follow-up 3 months after treatment discontinuation), and the patients were evaluated by a weekly card in which the patients reported the frequency of defecations and assessment of stool consistency using the seven forms described in BSS [