Raj, V. S.; Mou, H.; Smits, S. L.; Dekkers, D. H.; Müller, M. A.; Dijkman, R.; Muth, D.; Demmers, J. A.; Zaki, A. Dipeptidyl peptidase 4 is a functional receptor for the emerging human coronavirus-EMC. Nature. 03-2013, 495 (7440): 251–4. PMID 23486063. doi:10.1038/nature12005.请检查|date=中的日期值 (帮助)
Raj, V. S.; Mou, H.; Smits, S. L.; Dekkers, D. H.; Müller, M. A.; Dijkman, R.; Muth, D.; Demmers, J. A.; Zaki, A. Dipeptidyl peptidase 4 is a functional receptor for the emerging human coronavirus-EMC. Nature. 03-2013, 495 (7440): 251–4. PMID 23486063. doi:10.1038/nature12005.请检查|date=中的日期值 (帮助)