4. Methodology

Abstract

Unna-Massen-Priest Christof Krebs and the late Frau Asta Kruger. I am especially thankful for my friend and doctor who took very good care of my health -Dr. Med. Christoph Päuser.I have very vivid memories of the support from my academic mentor, Dr. Andrews Ofori Birikorang, who was such an inspiration to me every time I met with him. I am so grateful for the inspiration and phone calls