H0: pc ≥ ptr vs. H1: pc < ptr where pc and ptr are the proportion of subjects with microbiological cure (by KOH and culture) by 6 months post-baseline treatment, within the control group, and the laser group respectively. Here, rejecting the null hypothesis implies that the proportion of participants achieving microbiological cure is higher in the laser group. A 1-sided, 0.05 alpha-level Fisher's exact test for proportions will be used.34