Here is a link to the original, very dense study: http://twin.sci-hub.tw/7028/b28e7f2a10ed20f118272743121ee42e/stephens2018.pdf http://twin.sci-hub.tw/7028/b28e

Here is a link to the original, very dense study: http://twin.sci-hub.tw/7028/b28e7f2a10ed20f118272743121ee42e/stephens2018.pdf http://twin.sci-hub.tw/7028/b28e7f2a10ed20f118272743121ee42e...