See for example http://www.livescience.com/13958-birth-month-health-effects.html
In that case it needs to clarify between northern and southern hemisphere (although I guess you could do that via the country question with some effort).
See for example http://www.livescience.com/13958-birth-month-health-effects.html
In that case it needs to clarify between northern and southern hemisphere (although I guess you could do that via the country question with some effort).