function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Bulletin of the British Museum (Natural History). Entomology', 1],
    ['C. G. Proft, Fil. et Soc.', 14],
    ['European Journal of Taxonomy', 64],
    ['Ioannis Thomae Trattner', 4],
    ['Journal of Natural History', 2],
    ['Journal of the Proceedings of the Linnean Society of London, Zoology', 6],
    ['Laurentii Salvii', 4],
    ['Laurentius Salvius', 26],
    ['Linzer biologische Beiträge', 68],
    ['Officina Libraria Kortii', 7],
    ['Proft et Storch', 3],
    ['ZooKeys', 36],
    ['Zootaxa', 35],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=280)',
    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);