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An introduction to heart rate variability: methodological considerations and clinical applications.: An introd... http://t.co/5RsYMY0fnQ
An introduction to heart rate variability: methodological considerations and clinical applications.: An introd... http://t.co/5RsYMY0fnQ
An introduction to heart rate variability: methodological considerations and clinical applications http://t.co/wNebb7BBQK
An introduction to heart rate variability: methodological considerations and clinical applications: George E B... http://t.co/l2J92vYHTl
An introduction to heart rate variability: methodological considerations and clinical app... http://t.co/XFWd9TcYKh #physiology #biology