function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 3],
    ['Amurian Zoological Journal', 10],
    ['Biodiversity Data Journal', 55],
    ['Deutsche Entomologische Zeitschrift', 6],
    ['Entomo Helvetica', 4],
    ['Entomologist\'s monthly magazine', 3],
    ['Japanese Journal of Systematic Entomology', 12],
    ['Linzer biologische Beiträge', 29],
    ['Proceedings of the California Academy of Sciences, Series 4', 4],
    ['Russian Entomological Journal', 13],
    ['Subterranean Biology', 4],
    ['The Coleopterists Bulletin', 4],
    ['ZooKeys', 257],
    ['Zoological Science', 5],
    ['Zootaxa', 48],
    ['Other (7)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=467)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);