Cephos Link project: Psychiatric Patients migration flows in the Italian study Cohort 2012-2013
data source: Italian Minister of Health SDO database, Register of discharges from hospitals.
http://www.salute.gov.it/portale/temi/p2_4.jsp?area=ricoveriOspedalieri
Sankey diagram : https://sanez.github.io/cephos_flows/cephos_IT_flows.html
based on the Sara Quigley's block example:
http://bl.ocks.org/saraquigley/4f48f63c66ae6ee67864
