function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 60],
    ['Biodiversity Data Journal', 35],
    ['Contributions to Zoology', 15],
    ['European Journal of Taxonomy', 165],
    ['Journal of Natural History', 182],
    ['Laurentius Salvius', 71],
    ['Memoirs of Museum Victoria', 35],
    ['New Zealand Oceanographic Institute Memoir', 16],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 23],
    ['Revue suisse de Zoologie', 167],
    ['ZooKeys', 43],
    ['Zoological Journal of the Linnean Society', 14],
    ['Zoological Systematics', 59],
    ['Zoosystema', 41],
    ['Zootaxa', 2631],
    ['Other (41)', 89]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=3646)',
    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);