title: Chronobiologic studies on the cardiovascular system.
mesh_terms: D000284:Administration, Oral; D002320:Cardiovascular Physiological Phenomena; D002940:Circadian Rhythm; D002986:Clinical Trials as Topic; D004071:Digitalis Glycosides / Q000378:metabolism*; D004077:Digoxin / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000378:metabolism; D006801:Humans; D008297:Male; D009200:Myocardial Contraction
chemical_list: D004071:Digitalis Glycosides; D004077:Digoxin