There are very small differences in terms of wealth, health care access, or even physical location between these two countries. Or cultural traditions like Mă

There are very small differences in terms of wealth, health care access, or even physical location between these two countries. Or cultural traditions like Mărţişor: http://en.wikipedia.org/wiki/M%C4%83r%C5%A3i%C5%9For http://en.wikipedia.org/wiki/M%C4%83r%C5%A3i%C5%9For and Martenitsa: http://en.wikipedia.org/wiki/Martenitsa http://en.wikipedia.org/wiki/Martenitsa Or ancient history, or recent history, or genetics, etc. This really makes me wonder about the study, and exactly what they measured?