function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Academic Press', 3],
    ['Biodiversity Data Journal', 3],
    ['Deterville', 3],
    ['Déterville', 1],
    ['J. Tastu', 1],
    ['Journal of Threatened Taxa', 1],
    ['Monatsberichte der Königlich Preussischen Akademie des Wissenschaften zu Berlin', 4],
    ['MycoKeys', 11],
    ['Raffles Bulletin of Zoology', 41],
    ['Tijdschrift der Nederlandsche Dierkundige Vereeniging, 2 de Serie', 1],
    ['ZooKeys', 2],
    ['Zoosystema', 2],
    ['Zootaxa', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=76)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);