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Matti J. Tarvainen?
Vastaus:
Matti J. Tarvainen is a researcher and expert known for his work in the field of biomedical engineering, specifically related to biomedical signal processing and analysis. He has contributed to various studies and publications, particularly in the areas of heart rate variability and its applications in health monitoring and assessment.
If you're looking for specific information about his research, publications, or contributions to a particular field, please provide more details, and I would be happy to help!