function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Société Entomologique de France, Séries 1 - 6', 3],
    ['Biodiversity Data Journal', 4],
    ['CHIRONOMUS Journal of Chironomidae Research', 2],
    ['Japanese Journal of Systematic Entomology', 3],
    ['Proceedings of the Japanese Society of Systematic Zoology', 4],
    ['Proceedings of the Zoological Society of London', 1],
    ['Raffles Bulletin of Zoology', 2],
    ['Species Diversity', 2],
    ['Systematic Entomology', 1],
    ['ZooKeys', 6],
    ['Zoological Journal of the Linnean Society', 1],
    ['Zootaxa', 366]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=395)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);