function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 2],
    ['BIOGEOGRAPHIA-Lav. Soc. ital. Biogeoqr. N. S.', 12],
    ['Biodiversity Data Journal', 10],
    ['Caucasiana', 4],
    ['Check List', 1],
    ['Edinburgh encyclopaedia, conducted by David Brewster', 1],
    ['Insecta Mundi', 4],
    ['International Journal of Myriapodology', 58],
    ['Journal of Natural History', 5],
    ['Journal of Threatened Taxa', 1],
    ['MITTEILUNGEN über Höhlen- und Karstforschung Zeitschrift des Hauptverbandes Deutscher Höhlenfqrscher Jahrgang 1933', 1],
    ['Pan-Pac Ent', 2],
    ['ZooKeys', 11],
    ['Zoosystema', 6],
    ['Zootaxa', 55],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=178)',
    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);