function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 21],
    ['Annalen des kaiserlich-königlichen naturhistorischen Hofmuseums', 1],
    ['Bishop Museum Bulletin', 1],
    ['Journal of Parasitology', 1],
    ['Journal of Systematic Palaeontology', 1],
    ['Matematikai és Természettudományi Értesítő', 1],
    ['Quarterly Journal of the Geological Society, London', 1],
    ['Revista Ibérica de Parasitología', 1],
    ['Venus, the Japanese Journal of Malacology', 1],
    ['ZooKeys', 7],
    ['Zoosystematics and Evolution', 1],
    ['Zootaxa', 250]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=287)',
    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);