The top three countries where GertvanderHoek's Twitter followers are from include Netherlands(39%)USA(21%)and UK(6%)
About @GertvanderHoek (Gert van der Hoek):
Tracking infectious diseases & other health threats
@GertvanderHoek said:
32% of my followers are from Netherlands,17% from USA & 5% from Utrecht. tweepsmap.com/!GertvanderHoek. What's your TweepsMap?