Immune response and safety of heterologous ChAdOx1-nCoV-19/mRNA-1273 vaccination compared with homologous ChAdOx1-nCoV-19 or homologous mRNA-1273 vaccination oleh Wang-Huei Sheng, Sui-Yuan Chang, Pin-Hung Lin, Ming-Ju Hsieh, Hao-Hsiang Chang, Chien-Yu Cheng, Hung-Chih Yang, Ching-Fu Pan, Si-Man Ieong, Tai-Ling Chao, Jang-Pin Chen, Shu-Hsing Cheng, Shan-Chwen Chang