Predictive value of 3′-deoxy-3′-18F-fluorothymidine PET in the early response to anti-programmed death-1 therapy in patients with advanced non-small cell lung cancer ========================================================================================================================================================================= * Masayuki Sato * Yukihiro Umeda * Tetsuya Tsujikawa * Tetsuya Mori * Miwa Morikawa * Masaki Anzai * Yuko Waseda * Maiko Kadowaki * Yasushi Kiyono * Hidehiko Okazawa * Tamotsu Ishizuka