function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 2],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Canada Department of Agricul Entomology Branch Bulletin', 2],
    ['Caucasian Entomological Bulletin', 11],
    ['Entomo Helvetica', 1],
    ['Great Basin naturalist', 1],
    ['Hallageriis', 1],
    ['Insecta Mundi', 7],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 1],
    ['Mémoires pour servir à l\'histoire naturelle de la Provence î', 1],
    ['The Coleopterists Bulletin', 3],
    ['United States Department of Agriculture Technical Series Bulletin', 5],
    ['ZooKeys', 50],
    ['Zootaxa', 29]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=115)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);