function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 2],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 2],
    ['Anzeiger', 3],
    ['Archiv für Naturgeschichte', 10],
    ['Bulletin of the United States Fish Commission', 3],
    ['F. G. Levrault', 22],
    ['Laurentii Salvii', 2],
    ['Mölleri apud Heineck et Faber', 10],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Nodder & Company', 2],
    ['Philippine Journal of Science, Section D', 2],
    ['Privately published', 3],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Sanderiano Commissum', 3],
    ['Voorst', 4],
    ['Other (34)', 39]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=113)',
    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);