function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales zoologici', 4],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 2],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 2],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 5],
    ['Elytra, Tokyo', 1],
    ['Entomologische Blätter und Coleoptera', 4],
    ['Entomologische Nachrichten und Berichte', 1],
    ['Hokuryukan', 1],
    ['Insecta Mundi', 2],
    ['Linzer biologische Beiträge', 1],
    ['Magazin für Insektenkunde', 1],
    ['Memoirs of the Faculty of Education, Kagawa University', 3],
    ['Mélanges exotico-entomologiques. Moulins', 4],
    ['Revue de Zoologie et de Botanique Africaines', 4],
    ['Zootaxa', 89]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=124)',
    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);