Ramadhani, B. and Notopuro, P.B. 2021. DIFFERENCES VALUE OF PT AND APTT IN EXAMINATION OF ELECTROMECHANICAL AND PHOTO-OPTICAL METHOD. Journal of Vocational Health Studies. 5, 1 (Jul. 2021), 17–21. DOI:https://doi.org/10.20473/jvhs.V5.I1.2021.17-21.