A two-arm analysis of the immune response to heterologous boosting of inactivated SARS-CoV-2 vaccines oleh Arnone Nithichanon, Ludthawun Kamuthachad, Kanin Salao, Wisitsak Phoksawat, Chatcharin Kamsom, Surasakdi Wongratanacheewin, Chonlatip Pipattanaboon, Sakawrat Kanthawong, Umaporn Yordpratum, Sirinart Aromseree, Atibordee Meesing, Piroon Mootsikapun, Steven W. Edwards, Supranee Phanthanawiboon