[Using direct enzyme linked immunosorbent assay for the detection of IgG antibody on Bartonella henselae among healthy people in Changping, Beijing]. - Yang XR; Liu QY; Cui BY; Wang LX; Peng ZH; Ren DS (Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi, 2007)