function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 2],
    ['A. F. Rose', 21],
    ['European Journal of Taxonomy', 4],
    ['F. Schoell', 2],
    ['Giornale di Fisica, Chimica e Storia Naturale, Medicina ed Arti, Pavia, ed Arti Pavia', 9],
    ['Laurentius Salvius', 41],
    ['Möller', 2],
    ['Mölleri apud Heineck et Faber', 8],
    ['Panckoucke', 4],
    ['Privately published', 4],
    ['Proceedings of the Zoological Society of London, B', 7],
    ['Report of the British Association for the Advancement of Science', 3],
    ['Sanderiano Commissum', 3],
    ['Sanfilippo', 18],
    ['Zootaxa', 5],
    ['Other (7)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=142)',
    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);