function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annalen des kaiserlich-königlichen naturhistorischen Hofmuseums', 1],
    ['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],
    ['Biodiversity Data Journal', 9],
    ['Geodiversitas', 7],
    ['Geological Survey Professional Paper', 1],
    ['Memoires de la Societe geologique de France, 2', 1],
    ['Panckoucke', 1],
    ['Papéis Avulsos de Zoologia', 6],
    ['Quarterly Journal of the Geological Society, London', 11],
    ['Records of the Western Australian Museum', 2],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 2],
    ['ZooKeys', 7],
    ['Zoological Journal of the Linnean Society', 8],
    ['Zootaxa', 220],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=283)',
    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);