Corrigendum: Soluble PD−L1 changes in advanced non-small cell lung cancer patients treated with PD-1 inhibitors: an individual patient data meta-analysis - Shimizu, Takashi; Inoue, Eisuke; Ohkuma, Ryotaro; Kobayashi, Shinichi; Tsunoda, Takuya; Wada, Satoshi (Frontiers in Immunology, 2023)