Received: 18 November 2020
Accepted: 19 January 2021
First Online: 30 January 2021
Ethics approval and consent to participate
: The research was carried out in accordance with the Declaration of Helsinki. The Cooper University Hospital Institutional Review Board (IRB) has approved this multicenter study. IRB #20–365. Informed consent was waived by the local institutional review board at each participating center: Hospital Clínico Universitario de Valladolid, Valladolid, Spain, Cooper Neurologic Institute, Cooper University Hospital, New Jersey, USA, Vall d’Hebron Hospital, Barcelona, Spain, Hospital Universitari, Bellvitge, Barcelona, Spain, Hospital Clínic, Barcelona, Spain, Boston Medical Center, Boston University School of Medicine, MA, USA, Grady Memorial Hospital, Atlanta, GA, USA, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain, Alexandria University, Egypt, Ronald Reagan UCLA Medical Center, Los Angeles, USA, Valley Baptist Medical Center, Harlingen TX, USA, Bon Secours Mercy Health St. Vincent Hospital, Toledo, OH, USA.The results of this investigation are reported in accordance with the STrengthening the Reporting of OBservational studies in Epidemiology (STROBE) statement.
: Not applicable.
: No competing financial interests exist for any of the authors or collaborators.