function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Annals of the Durban Museum', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Copeia', 2],
    ['E. J. Brill', 2],
    ['Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology', 2],
    ['Journal of the Ocean Science Foundation', 1],
    ['Marine Investigations in South Africa', 1],
    ['Matsya [Bulletin of the Indian Society of Ichthyologists]', 2],
    ['Proceedings of the California Academy of Sciences, Series 3, Zoology', 1],
    ['Proceedings of the Department of Natural History, Tokyo Imperial Museum', 1],
    ['Proceedings of the Linnean Society of New South Wales', 3],
    ['Records of the Australian Museum', 2],
    ['Senckenbergiana Maritima', 1],
    ['Zootaxa', 15],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=40)',
    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);