function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Sibirica', 1],
    ['Acta Entomologica Musei Nationalis Pragae', 7],
    ['Aquatic insects', 1],
    ['Biodiversity Data Journal', 2],
    ['Check List', 2],
    ['Insecta Mundi', 1],
    ['Journal of Natural History', 2],
    ['Laurentius Salvius', 8],
    ['Linzer biologische Beiträge', 2],
    ['Officina Libraria Kortii', 1],
    ['Papéis Avulsos de Zoologia', 3],
    ['Raffles Bulletin of Zoology', 76],
    ['Zootaxa', 85]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=191)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);