function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anzeiger', 4],
    ['Bulletin de la Societe d\'Histoire Naturelle de Toulouse', 4],
    ['Check List', 2],
    ['Journal of Natural History', 12],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 4],
    ['Natuur en Geneeskunde Archief voor Nederlandsche-Indië', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Occasional Papers of the Museum of Zoology, University of Michigan', 3],
    ['Philippine Journal of Science, Section D', 2],
    ['Proceedings of the Linnean Society of New South Wales', 3],
    ['Publications of the Field Museum of Natural History, Zoölogical', 4],
    ['Records of the Western Australian Museum', 4],
    ['Smithsonian Contributions to Zoology', 2],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 2],
    ['Zootaxa', 44],
    ['Other (21)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=115)',
    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);