function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 1],
    ['A. F. Rose', 2],
    ['Acta Palaeontologica Polonica', 6],
    ['Beitr. Landesk. Oesterreich.', 1],
    ['Check List', 1],
    ['Comptes Rendus Biologies', 1],
    ['Eawag: Swiss Federal Institute of Aquatic Science and Technology', 2],
    ['F. Schoell', 1],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 1],
    ['Laurentius Salvius', 10],
    ['Mölleri apud Heineck et Faber', 1],
    ['Panckoucke', 1],
    ['Privately published', 1],
    ['Proceedings of the Boston Society of Natural History', 1],
    ['Zootaxa', 17],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=58)',
    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);