Lamarre-Cliche, M. et al. The fainting patient: value of the head-upright tilt-table test in adult patients with orthostatic intolerance. CMAJ. 164 (3), 2001, 372-6.
van Dijk, N. et al. Effectiveness of physical counterpressure maneuvers in preventing vasovagal syncope: the Physical Counterpressure Manoeuvres Trial (PC-Trial). J Am Coll Cardiol. 48 (8), 2006, 1652-7.