function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 13],
    ['African Invertebrates', 11],
    ['Beiträge zur Naturkunde. in Verbindung mit ihren freunden verfasst und hrsg. von und Prof. Friedr. Weber und Dr. D. M. H. Mohr', 1],
    ['Belgian Journal of Entomology', 3],
    ['Biodiversity Data Journal', 23],
    ['Far Eastern Entomologist', 7],
    ['Hawaii Sugar Plantation Association Entomological Bulletin', 1],
    ['Japanese Journal of Systematic Entomology', 1],
    ['Journal of Hymenoptera Research', 1],
    ['Linzer biologische Beiträge', 30],
    ['Papéis Avulsos de Zoologia', 1],
    ['Proceedings of the Hawaiian Entomological Society', 1],
    ['ZooKeys', 13],
    ['Zoosystema', 1],
    ['Zootaxa', 270]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=377)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);