function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Atas da Sociedade de biologia do Rio de Janeiro', 1],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 3, Zoologie', 1],
    ['Indian Journal of Helminthology', 1],
    ['Izvestiya Akademii Nauk Kazakhskoi SSR Seriya Biologicheskaya', 1],
    ['Journal of Fujian Teachers University (Natural Science)', 1],
    ['Tulane Studies in Zoology and Botany', 1],
    ['Wuyi Science Journal', 1],
    ['Zoologische Jahrbucher, Abteilung für Systematik', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);