Statistical Analysis:
Data were analysed utilizing the IBM SPSS Statistics for Windows, version 20.0 (IBM Corp., Armonk, N.Y., USA), for all statistical analysis purposes. Data quality assurance measures were applied for data completeness and accuracy and summary of statistics were obtained and analysed as baseline and demographic characteristics were defined using frequencies and percentages for categorical values and relevant variables were cross-tabulated. While mean, median, range applied for follow-up durations, in years. Survival analysis was performed utilizing Kaplan-Meier method, to calculate 3-year overall survival of the cohort as time from diagnosis date to the date last seen or date of death in case of a deceased patient was used to calculate survival time (in years), the difference between survivals were tested using either the long-rank or Taron-Ware test as applicable, p-value of < 0.05 considered statistically significant.