Matthias Gruber is a professional researcher, specialized in biomedical informatics and artificial intelligence. He has been studying Wing Chun (Yip Man 葉問 lineage) since 1991, mainly with Grandmaster Keith-R. Kernspecht's European WingTsun Organization (EWTO). His Sifu is Master Mario Janisch, 6th level practitioner.
Lineage:
Yip Man -> Leung Ting -> Keith R Kernspecht -> Mario Janisch -> Matthias Gruber