function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales du Musée Royal du Congo Belge, Série 5, Zoologiques', 1],
    ['Boletim Biologico (N. S.)', 1],
    ['Journal of Fujian Teachers University (Natural Science)', 1],
    ['Journal of Natural History', 2],
    ['Journal of Parasitology', 3],
    ['Journal of helminthology', 1],
    ['Keizyo Journal of Medicine', 1],
    ['Philippine Journal of Science, Section D', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Revue suisse de Zoologie', 3],
    ['Roosevelt Wild Life Annals', 1],
    ['Systematic Parasitology', 2],
    ['The American Midland Naturalist', 1],
    ['Transactions of the American Microscopical Society', 1],
    ['Zootaxa', 32],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=53)',
    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);