Article History
Received: 19 April 2020
Accepted: 13 July 2020
First Online: 22 July 2020
Compliance with ethical standards
:
: The authors have no conflicts of interest.
: This study was approved by the Columbia University Institutional Review Board (Protocol #AAAS1001) with waiver of consent for Research of Existing Data/Records/Specimens (46.101(b) 4). This study was performed in compliance with The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for reporting observational studies.
: Informed consent is not possible or required with this data source.
Free to read: This content has been made available to all.