function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 7],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 5],
    ['Belgian Journal of Entomology', 7],
    ['Biodiversity Data Journal', 57],
    ['Fauna Entomologica Scandinavica', 14],
    ['Journal of the Bombay Natural History Society', 5],
    ['Myrmecologische Nachrichten', 7],
    ['Proceedings of the Institute of Zoology', 17],
    ['Revue suisse de Zoologie', 5],
    ['Soil Organisms', 70],
    ['Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien', 4],
    ['Yezhegodnik Zoologicheskogo Muzeya Imperatorskoi Akademii Nauk', 5],
    ['ZooKeys', 22],
    ['Zoosystema', 14],
    ['Zootaxa', 36],
    ['Other (13)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=295)',
    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);