%0 Journal Article %T Variations in diagnostic yield of head-up tilt test and electrophysiology in groups of patients with syncope of unknown origin %A Sagristà-Sauleda,, J %A Romero-Ferrer,, B %A Moya,, A %A Permanyer-Miralda,, G %A Soler-Soler,, J %J European Heart Journal %V 22 %N 10 %@ 0195-668X %D 2001-05-01 %I Oxford University Press %~ DeepDyve