function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 119],
    ['Check List', 21],
    ['European Journal of Taxonomy', 29],
    ['Evolutionary Systematics', 61],
    ['Insect Systematics and Diversity', 39],
    ['Insecta Mundi', 91],
    ['J. Hübner', 11],
    ['Journal of Natural History', 86],
    ['Linzer biologische Beiträge', 134],
    ['Revista Chilena de Entomología', 17],
    ['ZooKeys', 49],
    ['Zoological Journal of the Linnean Society', 37],
    ['Zoological Research', 75],
    ['Zoosystema', 63],
    ['Zootaxa', 1030],
    ['Other (57)', 150]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2012)',
    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);