function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 26],
    ['African invertebrates', 2],
    ['Biodiversity Data Journal', 3],
    ['Boletín del Museo Nacional de Historia Natural, Chile, (Bol. Mus. Nac. Hist. Nat. Chile)', 1],
    ['European Journal of Taxonomy', 2],
    ['Iberus: Revista de la Sociedad Española de Malacología', 1],
    ['PaleoBios', 5],
    ['ZooKeys', 20],
    ['Zoological Science', 2],
    ['Zoosystema', 15],
    ['Zootaxa', 40]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=117)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);