Funding for this research was provided by:
National Institute on Drug Abuse (DA026476)
Received: 2 February 2016
Revised: 7 May 2016
Accepted: 14 May 2016
First Online: 2 June 2016
Compliance with ethical standards
: Presented in abstract form at the XXXV International Congress, European Association of Poisons Centres and Clinical Toxicologists, St. Julian’s, Malta, 2015.