Medical studies at the University of Zurich with state examination in 1979, then further education as a general practitioner. From 1987 for 10 years management of a country practice in Wildegg, canton Aargau, Switzerland, with conventional medicine and TCM, 1997 move to Aarau. Practical experience until 2016. Already since graduation, member of a student group based on the sinologist Prof. Manfred Porkert, co-founder of AG-TCM or ZG-TCM (Zurich), also training with Radha Thambirajah, Nguyen Van Nghi, François Ramakers, Chris Dhaenens and many others, also several stays in China at TCM universities (Chengdu, Guangzhou). In 1989 the company Complemedis was founded. Six years later, opening of the analytical laboratory Phytax GmbH, competence center for the identification and qualification of TCM medicinal products.