function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Société Scientifique de Bruxelles', 1],
    ['Ballière', 2],
    ['Belgian Journal of Entomology', 1],
    ['Biodiversity Data Journal', 4],
    ['Bollettino del Laboratorio di Zoologia Generale ed Agraria del R. Scuola d\'Agricultura di Portici', 2],
    ['Bulletin de l\'Institut Fouad I du Desert', 3],
    ['Bulletin de la Société Entomologique de France', 2],
    ['Bulletin of Entomological Research', 1],
    ['Bulletin of the Wisconsin Natural History Society', 2],
    ['Canadian Entomologist', 1],
    ['Gouvernement General de l’Afrique Occidentale Francaise', 1],
    ['Linzer biologische Beiträge', 25],
    ['Proceedings of the Hawaiian Entomological Society', 2],
    ['Transactions of the Entomological Society of London', 11],
    ['ZooKeys', 80],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=144)',
    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);