function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 147],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 3],
    ['Ecologica Montenegrina', 44],
    ['Invertebrate Taxonomy', 1],
    ['Memoirs of Museum Victoria', 1],
    ['Proceedings of the Japanese Society of Systematic Zoology', 1],
    ['Records of the Australian Museum', 9],
    ['Records of the Western Australian Museum', 2],
    ['Transactions of the Royal Society of New Zealand, Biological Sciences', 1],
    ['Zoologischer Anzeiger', 1],
    ['Zoosystema', 1],
    ['Zootaxa', 331]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=542)',
    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);