Funding for this research was provided by:
Harvard Catalyst (KL2 TR001100-01)
National Institutes of Health (UL1 TR001102)
National Institute on Aging (T32 AG023480)
Received: 22 October 2019
Accepted: 22 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: This study was approved by the institutional review board at Beth Israel Deaconess Medical Center. Written informed consent was obtained from the patients. The patients received financial compensation.
: Not applicable.
: Jeffrey J. Popma reports receiving grants to his institution from Medtronic, Boston Scientific, and Edwards Lifesciences, and serves on advisory boards for Boston Scientific and Edwards Lifesciences.Kimberly Guibone is an educational consultant for Medtronic.The other authors declare that they have no competing interests.