Representative Image Feature Extraction via Contrastive Learning Pretraining for Chest X-ray Report Generation. - Yu-Jen Chen; Wei-Hsiang Shen; Hao-Wei Chung; Jing-Hao Chiu; Da-Cheng Juan; Tsung-Ying Ho; Chi-Tung Cheng; Meng-Lin Li; Tsung-Yi Ho (CoRR, 2022)