title: A study on the timings of ballistocardiographic waves by means of their simultaneous recording with phonocardiogram and external pulse traces.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000680:Amyl Nitrite / Q000494:pharmacology; D001281:Atrial Fibrillation / Q000503:physiopathology; D001450:Ballistocardiography; D006321:Heart / Q000502:physiology*; D006339:Heart Rate / Q000187:drug effects; D006347:Heart Sounds; D006801:Humans; D008729:Methoxamine / Q000494:pharmacology; D008875:Middle Aged; D010701:Phonocardiography; D011674:Pulse
chemical_list: D000680:Amyl Nitrite; D008729:Methoxamine