function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Ichthyologica et Piscatoria', 1],
    ['Annals of the Carnegie Museum', 1],
    ['Bulletin of the United States Bureau of Fisheries', 1],
    ['Bulletin of the United States Fish Commission', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Contributions in Marine Science', 1],
    ['Copeia', 1],
    ['European Journal of Taxonomy', 2],
    ['Mémoires du Muséum National d’Histoire Naturelle, Série A, Zoologie', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Proceedings of the Linnean Society of New South Wales', 1],
    ['Records of the Zoological Survey of India', 1],
    ['Zootaxa', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);