function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 2],
    ['Biodiversity Data Journal', 2],
    ['Carolum Reichard', 2],
    ['Entomo Helvetica', 1],
    ['Far Eastern Entomologist', 16],
    ['International Journal for Parasitology: Parasites and Wildlife', 1],
    ['Journal of Entomological Science', 1],
    ['Laurentius Salvius', 5],
    ['Linzer biologische Beiträge', 10],
    ['Palaeoentomology', 2],
    ['Papéis Avulsos de Zoologia', 8],
    ['Vestnik Zoologii', 5],
    ['ZooKeys', 2],
    ['Zootaxa', 255],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=317)',
    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);