function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Anzeiger', 1],
    ['Biodiversity Data Journal', 1],
    ['Bulletin Jinan Univ., Nat. Sci. Ed.', 1],
    ['Bulletin Zool. Surv. India', 1],
    ['Bulletin of the American Museum of Natural History', 1],
    ['Bulletin of the Raffles Museum', 2],
    ['Check List', 1],
    ['Copeia', 1],
    ['Ha Noi, Scientific & Technology', 3],
    ['Ichthyological Exploration of Freshwaters', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 3],
    ['Sinensia', 2],
    ['Zootaxa', 11],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=39)',
    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);