About the Authors
Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
Institute for Clinical Research and Health Policy Studies, Tufts University School of Medicine, Boston, Massachusetts, United States of America
Biostatistics Unit, Medical Research Council, Cambridge, United Kingdom
Biomedical Research Institute, Foundation for Research and Technology-Hellas, Ioannina, Greece
The authors have declared that no competing interests exist.
EE, TAT, GS, and JPAI conceived and designed the experiments. EE, TAT, GS, and JPAI analyzed the data. TAT and GS commented critically on the manuscript. EE and JPAI wrote the paper.