function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aqua, Journal of Ichthyology and Aquatic Biology', 5],
    ['Bulletin Zoologisch Museum Universiteit van Amsterdam', 1],
    ['Fishes of Sahul', 2],
    ['Japanese Journal of Ichthyology', 1],
    ['Memoirs of the Queensland Museum', 2],
    ['Papua New Guinea Agricultural Journal', 1],
    ['Publications of the Field Museum of Natural History, Zoölogical', 1],
    ['Raffles Bulletin of Zoology', 1],
    ['Records of the Western Australian Museum', 1],
    ['Revue française d\'Aquariologie Herpétologie', 6],
    ['T. F. H. Publications, Inc.', 1],
    ['Tropical Fish Hobbyist', 1],
    ['Zootaxa', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);