function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anzeiger', 3],
    ['Check List', 2],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['F. S. Hübschmann, Monachii [= Munich] & Fleischer, Lipsiae [= Leipzig]', 2],
    ['Ind. Univ. Studies', 1],
    ['Memoirs of the Carnegie Museum', 2],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 1],
    ['Neotropical Ichthyology', 1],
    ['Oversigt over det Kongelige Danske Videnskabernes Selskabs Forhandlinger', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 3],
    ['Proceedings of the American Philosophical Society', 2],
    ['Proceedings of the Biological Society of Washington', 2],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 2],
    ['Zootaxa', 3],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=31)',
    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);