title: Ballistocardiographic waveform--some contributing factors.
mesh_terms: D000328:Adult; D000367:Age Factors; D001450:Ballistocardiography / Q000379:methods*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008889:Military Personnel; D011446:Prospective Studies; D012016:Reference Values