function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 31],
    ['American Museum Novitates', 53],
    ['Biodiversity Data Journal', 62],
    ['E. W. Janson', 25],
    ['European Journal of Taxonomy', 64],
    ['Halteres', 16],
    ['Insect Systematics and Diversity', 24],
    ['Journal of Hymenoptera Research', 204],
    ['Laurentius Salvius', 18],
    ['Linzer biologische Beiträge', 668],
    ['Papéis Avulsos de Zoologia', 70],
    ['Records of the Zoological Survey of India', 20],
    ['ZooKeys', 73],
    ['Zoological Studies', 28],
    ['Zootaxa', 896],
    ['Other (37)', 135]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2387)',
    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);