function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals Natal Mus. 21.3.595 - 607. pdf', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Biodiversity Data Journal', 4],
    ['C. G. Proft, Fil. et Soc.', 7],
    ['Christ. Gottl. Proft', 4],
    ['Diptera Sveciae', 1],
    ['Far Eastern Entomologist', 5],
    ['Faunus (Gistel\'s)', 2],
    ['Joan. Jac. Palm', 2],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 1],
    ['Officina Libraria Kortii', 2],
    ['Revue suisse de Zoologie', 3],
    ['Sborník Severočeského Muzea', 3],
    ['Schultz-Wundermann', 55],
    ['Zootaxa', 60],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=156)',
    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);