function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 2],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Berliner entomologische Zeitschrift / herausgegeben von dem Entomologischen Verein in Berlin', 4],
    ['Ecologica Montenegrina', 8],
    ['Far Eastern Entomologist', 6],
    ['Insecta Mundi', 3],
    ['Insects of Guam II', 3],
    ['Journal of Natural History', 3],
    ['Journal of Threatened Taxa', 25],
    ['Transactions of the American Entomological Society', 12],
    ['Umwelt-Vollzug', 69],
    ['Zoological Systematics', 3],
    ['Zoosystema', 80],
    ['Zootaxa', 466],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=689)',
    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);