Clinical, hemodynamic and metabolic responses during pacing in the supine and sitting postures in patients with angina pectoris.
Thadani U, Lewis RJ, West RO, Chiong MA, Parker JO. Clinical, hemodynamic and metabolic responses during pacing in the supine and sitting postures in patients with angina pectoris. Am J Cardiol. 1979 Aug; 44(2):249-56.