Preliminary studies of Volten VR4® Kaempferia parviflora herb extracts on blood glucose levels in human type-2 diabetes mellitus and its mineral element analysis oleh Mohamad Ahmad Sabry, Nordin Muhammad Noor, Ani Ismail Che, Jemberang Johan, Ishak Reezal, Hasan Ahmad Najib, Ahmad Muhammad Imran, Omar Mohd Rahman, Hamzah Roszymah