Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (UID/EMS/00667/2013, UID/EMS/00667/2013, UID/EMS/50022/2013, PTDC/EMS-PRO/4732/2014, PTDC/EMS-PRO/4732/2014)
Article History
Received: 24 January 2018
Revised: 30 August 2018
Accepted: 3 September 2018
First Online: 21 September 2018