Schwartz, B S
Pollak, J
Bailey-Davis, L
Hirsch, A G
Cosgrove, S E
Nau, C
Kress, A M
Glass, T A
Bandeen-Roche, K
Article History
Received: 22 December 2014
Revised: 10 September 2015
Accepted: 28 September 2015
First Online: 21 October 2015
Competing interests
: The authors declare no conflict of interest.