University of Port Harcourt Port Harcourt, Nigeria , Nigeria

Department of Internal Medicine, University of Port Harcourt , Nigeria

Cardiothoracic Surgery Unit,Department of Surgery,University of Port Harcourt, Port Harcourt, Nigeria , Nigeria

University of Port Harcourt, Port Harcourt , Nigeria

Department of Clinical Science, Marquette University, Milwaukee, WI, USA.

Associat professor Asst manager administration & research laboratory, Gulshan-e-Iqbal, Karachi, Pakistan

Associat professor of physiotherapy, Mobility Impairment Research Center, Babol University of Medical, Iran.

Oral Function and Prosthetics Dentistry, Radboud University Medical Center, Netherland.