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Chen, Cheng-Yen, Kai-Hua Chi, Robert W. George, David L. Cox, Amitabh Srivastava, Mário Rui Silva, Fátima Carneiro, Gregory Y. Lauwers, und Ronald C. Ballard. Diagnosis of Gastric Syphilis By Direct Immunofluorescence Staining and Real-Time PCR Testing. American Society for Microbiology, 2006.

Chen, Cheng-Yen, et al. Diagnosis of Gastric Syphilis By Direct Immunofluorescence Staining and Real-Time PCR Testing. American Society for Microbiology, 2006.