title: Explaining the unexplained causes of syncope: are we there yet?
authors.forename: Niraj
authors.initials: N
authors.lastname: Mehta
authors.forename: Maria Zildany Pinheiro
authors.initials: MZ
authors.lastname: Tavora
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Morillo
mesh_terms: D000241:Adenosine / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002309:Cardiology / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D008875:Middle Aged; D011379:Prognosis; D013575:Syncope / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*
chemical_list: D000241:Adenosine