function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 469],
    ['Archiv für Molluskenkunde', 900],
    ['Biodiversity Data Journal', 586],
    ['European Journal of Taxonomy', 1742],
    ['Geodiversitas', 593],
    ['Journal of Natural History', 891],
    ['Laurentius Salvius', 670],
    ['Mémoires du Muséum national d\'Histoire naturelle', 527],
    ['Records of the Australian Museum', 394],
    ['Visaya', 649],
    ['ZooKeys', 6099],
    ['Zoological Journal of the Linnean Society', 763],
    ['Zoosystema', 933],
    ['Zoosystematics and Evolution', 499],
    ['Zootaxa', 9005],
    ['Other (439)', 5535]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30255)',
    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);