hat
2007. doi:10.1016/j.ajic.2007.07.001. ↑ « "Generalized Infectious Cycle" Diagram Illustration ». science.education.nih.gov.
eng
35 (10): S27–S64. doi:10.1016/j.ajic.2007.07.001. ↑ ""Generalized Infectious Cycle" Diagram Illustration". science.education.nih.gov.