Here is a link to the underlying study, for people who are interested in digging into the data themselves: http://arxiv.org/pdf/1509.06461v1.pdf http://arxiv.or

Here is a link to the underlying study, for people who are interested in digging into the data themselves: http://arxiv.org/pdf/1509.06461v1.pdf http://arxiv.org/pdf/1509.06461v1.pdf