function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 32],
    ['African Invertebrates', 1],
    ['Alpine Entomology', 25],
    ['Annales Historico-Naturales Musei Nationalis Hungarici', 1],
    ['Berlingianis', 2],
    ['Biodiversity Data Journal', 2],
    ['Diptera Sveciae', 9],
    ['Entomo Helvetica', 12],
    ['Insects of Guam-II', 1],
    ['Journal of the Royal Society of New Zealand', 2],
    ['Linzer biologische Beiträge', 2],
    ['New Zealand Department of Scientific and Industrial Research bulletin', 1],
    ['Species Diversity', 2],
    ['ZooKeys', 32],
    ['Zootaxa', 144],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=269)',
    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);