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Stolz, Erwin; Rüsges, Damian A W; Hoffmann, Oskar; Gerriets, Tibo; Nedelmann, Max; Lochner, Piergiogio; Kaps, Manfred (2010). Active regulation of cerebral venous tone: simultaneous arterial and venous transcranial Doppler sonography during a Valsalva manoeuvre. European journal of applied physiology, 109(4), pp. 691-7. Heidelberg: Springer 10.1007/s00421-010-1411-0
