function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin Inst Arts Sci Brooklyn', 1],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 1],
    ['Caucasian Entomological Bulletin', 1],
    ['Far Eastern Entomologist', 4],
    ['Mich. Friedr. Bartschii', 1],
    ['Officina Libraria Kortii', 1],
    ['The Coleopterists Bulletin', 1],
    ['Transactions of the American Entomological Society', 28],
    ['ZooKeys', 7],
    ['ZooNotes', 32],
    ['Zoologisches Magazin', 1],
    ['Zootaxa', 30]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=108)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);