Fernandez, DRavindran, BBedi, B MAgarwal, S C1975-03-012009-05-271975-03-012009-05-271975-03-01Fernandez D, Ravindran B, Bedi BM, Agarwal SC. A comparative quantitative evaluation of VDRL and Treponema pallidum haemagglutination tests. Indian Journal of Medical Research. 1975 Mar; 63(3): 430-6http://imsear.searo.who.int/handle/123456789/17084engHemagglutination TestsHumansSyphilis --diagnosisSyphilis SerodiagnosisComparative Study