Feature Extraction Approach for Speaker Verification to Support Healthcare System Using Blockchain Security for Data Privacy[J] COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022(2022) Upadhyay, Shrikant Kumar, Mohit Kumar, Ashwani Karnati, Ramesh Mahommad, Gouse Baig Althubiti, Sara A. Alenezi, Fayadh Polat, Kemal