In-depth feasibility study on conservative surgery, perioperative high-dose-rate brachytherapy, and external beam radiation therapy, with a focus on interstitial brachytherapy for soft tissue sarcomas: Insights from a single-institute experience - Purnima Thakur; Vineet Aggarwal; Manish Gupta; Anjali Azad; Naina Negi; Vishal Verma; Parul Sharma; Neeraj Parihar (Journal of Contemporary Brachytherapy)