Text and Data Mining valid from 2019-01-24
Received: 30 October 2017
Accepted: 25 October 2018
First Online: 24 January 2019
Compliance with ethical standards
: In the past 3 years, Dr. Buitelaar has been a consultant to/member of advisory board of/and/or speaker for Janssen Cilag BV, Eli Lilly, Bristol-Myer Squibb, Shering Plough, UCB, Shire, Novartis, and Servier. He is not an employee of any of these companies, and not a stock shareholder of any of these companies. He has no other financial or material support, including expert testimony, patents, and royalties. Drs. Herpers, Bakker, Greven, Wiegers, Nijhof, Baanders, and Rommelse declare that they have no conflict of interest.
: This study was approved by the Dutch <i>Central Committee on Research involving Human Subjects,</i> protocol number NL26773.000.09 (Centrale Commissie Mensgebonden Onderzoek; CCMO). As such, all procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants, and their parents, included in the study.