Funding for this research was provided by:
California HIV/AIDS Research Program (ID10-SD-057)
National Institute of Mental Health (MH099987, MH062512, MH107260)
National Institute on Aging (AG048762)
First Online: 20 December 2017
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.