function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 2],
    ['Belgian journal of entomology', 2],
    ['Biodiversity Data Journal', 6],
    ['Bulletin of the American Museum of Natural History', 2],
    ['Ecologica Montenegrina', 2],
    ['European Journal of Taxonomy', 19],
    ['Far Eastern Entomologist', 18],
    ['Faunitaxys', 12],
    ['Gottl. Friedr. Schniebes', 2],
    ['Insecta Mundi', 2],
    ['Journal of Orthoptera Research', 3],
    ['ZooKeys', 3],
    ['Zoological Systematics', 28],
    ['Zoosystema', 93],
    ['Zootaxa', 530],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=734)',
    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);