About the Authors

Andrea Galli

Affiliation Emergency Department, Vimercate Hospital, Vimercate, Milan, Italy

Franca Barbic

Affiliation Neuroscience Research Association, Internal Medicine, “Bolognini” Hospital, Seriate, Bergamo, Italy

Marta Borella

Affiliation Internal Medicine 2, “L. Sacco” Hospital, Milan, Italy

Giorgio Costantino

Affiliation Internal Medicine 2, “L. Sacco” Hospital, Milan, Italy

Francesca Perego

Affiliation Internal Medicine 3, “L. Sacco” Hospital, Milan, Italy

Franca Dipaola

Affiliation Internal Medicine, Sesto S. Giovanni Hospital, Sesto S. Giovanni, Milan, Italy

Francesco Casella

Affiliation Internal Medicine 3, “L. Sacco” Hospital, Milan, Italy

Pier Giorgio Duca

Affiliation Medical Statistics, Institute of Clinical Science “L.Sacco”, Milan, Italy

Andrè Diedrich

Affiliation Division of Clinical Pharmacology, Department of Medicine, Autonomic Dysfunction Center, Vanderbilt University, Nashville, Tennessee, United States of America

Satish Raj

Affiliation Division of Clinical Pharmacology, Department of Medicine, Autonomic Dysfunction Center, Vanderbilt University, Nashville, Tennessee, United States of America

David Robertson

Affiliation Division of Clinical Pharmacology, Department of Medicine, Autonomic Dysfunction Center, Vanderbilt University, Nashville, Tennessee, United States of America

Alberto Porta

Affiliations Department of Technologies for Health, Galeazzi Orthopaedic Institute, Milan, Italy, University of Milan, Milan, Italy

Raffaello Furlan

raffaello.furlan@unimi.it

Affiliations Neuroscience Research Association, Internal Medicine, “Bolognini” Hospital, Seriate, Bergamo, Italy, University of Milan, Milan, Italy

on behalf of the STePS Investigators

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AG FB GC RF. Performed the experiments: MB FP FD FC. Analyzed the data: PGD GC AP AD. Contributed reagents/materials/analysis tools: AP. Wrote the paper: RF SR DR FB. Critical revision of the manuscript for important intellectual content: SR DR.