function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allgemeine Encyclopädie der Wissenschaften und Künste', 1],
    ['Biodiversity Data Journal', 20],
    ['Bulletin of the Florida State Museum, Biological Sciences', 1],
    ['Check List', 11],
    ['Déterville', 2],
    ['G. Levrault', 10],
    ['Historical Biology', 2],
    ['J. Dixwell', 2],
    ['Laurentius Salvius', 27],
    ['London', 2],
    ['Papéis Avulsos de Zoologia', 3],
    ['Transactions of the Linnean Society of London', 4],
    ['Utrecht', 4],
    ['Zoosystema', 13],
    ['Zootaxa', 19],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=129)',
    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);