@article{Masanori Kawataki20217450-21, title={Pneumonia Due to Human Coronavirus OC43 in an Immunocompetent Adult Detected by Multiplex Polymerase Chain Reaction}, author={Masanori Kawataki and Akihiro Ito and Tadashi Ishida}, journal={Internal Medicine}, volume={60}, number={21}, pages={3497-3501}, year={2021}, doi={10.2169/internalmedicine.7450-21} }