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Heart Rate Variability (HRV) to Evaluate Surgical Risk on Patients on Beta Blockers

This study has been withdrawn prior to enrollment.
(no patients were enrolled. Study was closed prior to study start.)
Information provided by:
University of California, San Francisco Identifier:
First received: April 5, 2011
Last updated: June 25, 2012
Last verified: June 2012
No Study Results Posted on for this Study
Study was withdrawn before participants were enrolled.
  Study Status: This study has been withdrawn prior to enrollment.
  Study Completion Date: March 2012
  Primary Completion Date: March 2012 (Final data collection date for primary outcome measure)