function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Comun. Mus. Ciênc. Tecnol. PUCRS, Sér. Zool.', 4],
    ['Neotropical Ichthyology', 4],
    ['Revista del Museo de La Plata, Sección Zoologia', 1],
    ['Revue Suisse de Zoologie', 1],
    ['Vertebrate Zoology', 2],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zoosystematics and Evolution', 1],
    ['Zootaxa', 61],
    ['aqua, International Journal of Ichthyology', 1],
    ['aqua, Journal of Ichthyology and Aquatic Biology', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=80)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);