Statistical analysis
Patient data was collected, de-identified, and stored in an online database (Redcap, Vanderbilt University; Excel Microsoft Corp.). All non-categorical data were evaluated for normality. Descriptive statistics included mean/SD, median (range) and N (%) based on normal, non-normal and categorical data type respectively. We compared patients who had resolution at 6 months with those who did not by t-test for normally distributed data, Wilcoxon rank sum test for non-normal data and chi-square test/exact test for categorical data. P<0.05 was considered significant. All analyses were performed in SAS Statistical Software (version 9.4, Cary, NC).