PET/CT scan and biopsy-driven approach for safe anti-PD-1 therapy discontinuation in patients with advanced melanoma ==================================================================================================================== * Geoffrey T. Gibney * Jacob Zaemes * Shelly Shand * Neil J. Shah * David Swoboda * Kellie Gardner * Arash Radfar * Vesna Petronic-Rosic * Michael J. Reilly * Waddah B. Al-Refaie * Suthee Rapisuwon * Michael B. Atkins