function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin de l\'Institut Océanographique de Monaco', 1],
    ['Bulletin of the United States Bureau of Fisheries', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Proceedings of the United States National Museum, 3', 3],
    ['Quarterly Journal of the Taiwan Museum', 1],
    ['Records of the Australian Museum', 2],
    ['Repertorio Fisico-Natural de la Isla de Cuba', 1],
    ['Stanford Ichthyological Bulletin', 1],
    ['Trudy Az. - Chern. Nauch. - issl. Ryb. Sta.', 1],
    ['Verh. K. Akad. Wet. Amsterdam, Section 2', 1],
    ['Verslagen en Mededeelingen der Koninklijke Akademie van Wetenschappen. Afdeeling Natuurkunde', 1],
    ['Zootaxa', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);