[1
]
Department of Hygiene and Epidemiology, University of Ioannina School of Medicine,
University Campus, P.O. Box 1186, 45110 Ioannina, Greece.
[2
]
Department of Hygiene and Epidemiology, University of Ioannina School of Medicine,
University Campus, P.O. Box 1186, 45110 Ioannina, Greece; Department of Epidemiology
and Biostatistics, Imperial College London, Norfolk Place W2 1PG, London, United Kingdom.
[3
]
Channing Division of Network Medicine, Department of Medicine, Brigham and Women's
Hospital and Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115, USA.
[4
]
Department of Medicine, Stanford Prevention Research Center, Stanford University School
of Medicine, 1265 Welch Rd, MSOB X306, Stanford, CA 94305, USA; Department of Health
Research and Policy, Stanford University School of Medicine, Stanford, CA 94305, USA;
Department of Statistics, Stanford University School of Humanities and Sciences, Stanford,
CA 94305, USA. Electronic address: jioannid@stanford.edu.