function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anzeiger', 2],
    ['Blätter für Aquarien- und Terrarien-Kunde', 2],
    ['Bulletin Zoologisch Museum Universiteit van Amsterdam', 2],
    ['Check List', 2],
    ['Commun. Mus. Ciênc. PUCRGS, Serie Zoologia', 2],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 3],
    ['Neotropical Ichthyology', 13],
    ['Pap. Avulsos Dep. Zool., São Paulo', 3],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 6],
    ['Proceedings of the American Philosophical Society', 2],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 5],
    ['ZooKeys', 4],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zootaxa', 8],
    ['Other (21)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=81)',
    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);