引用本文: | 2007年4月份中国甲乙丙类传染病疫情动态简介[J]. 疾病监测, 2007, 22(5): 292-292. DOI: 10.3784/j.issn.1003-9961.2007.5.292 |
Citation: | National Data of Class A, B and C Infectious Diseases in April 2007[J]. Disease Surveillance, 2007, 22(5): 292-292. DOI: 10.3784/j.issn.1003-9961.2007.5.292 |