The use of ultra-low frequency ballistocardiograms in clinical practice with special reference to the causes of amplitude variations.
D000328:Adult; D000367:Age Factors; D001450:Ballistocardiography / Q000592:standards; D001783:Blood Flow Velocity; D005260:Female; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000175:diagnosis*; D006400:Hematocrit; D006452:Hemoglobinometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013312:Stress, Physiological / Q000175:diagnosis*