function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Humboldt., Geol.', 1],
    ['Annals of the Carnegie Museum', 2],
    ['Bulletin de la Societe d\'Histoire Naturelle de Toulouse', 1],
    ['Check List', 3],
    ['Copeia', 3],
    ['Ind. Univ. Studies', 2],
    ['Journal of Fish Biology', 1],
    ['Neotropical Ichthyology', 1],
    ['Notulae Naturae', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Publications of the Field Museum of Natural History, Zoölogical', 1],
    ['Revue française d\'Aquariologie Herpétologie', 3],
    ['Smithsonian Contributions to Zoology', 14],
    ['Zootaxa', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);