Postural Tachycardia Syndromewww.UptoDate.com,Aug, Cheshire,W.P., 2023
Evaluating DizzinessAm J Med 107:468-478, Hoffman,R.M.,et al, 1999
Syncope:Current Diagnostic Evaluation and ManagementAnn Int Med 112:850-863, Manolis,A.S.,et al, 1990