Kosteas, Vasilios D.
Renna, Francesco
Article History
First Online: 12 April 2018
Compliance with Ethical Standards
: The procedures followed in this study were in accordance with the ethical standards. Only secondary publicly available data was utilized. VDK and FR do not have any conflict of interest and have received no funding for this study.
: the data that support the findings of this study are available from Kaiser Family Foundation/Health Research & Educational Trust, but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of Family Foundation/Health Research & Educational Trust.