function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica', 1],
    ['Acta Zootaxonomica Sinica', 1],
    ['African Invertebrates', 2],
    ['Antarctic Research Series', 2],
    ['Biološki Vestnik', 1],
    ['Comparative Parasitology', 5],
    ['Dobutsugaku Zasshi', 5],
    ['Ecologica Montenegrina', 6],
    ['Journal of Parasitology', 3],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Transactions of the American Microscopical Society', 3],
    ['Transactions of the Royal Society of New Zealand', 2],
    ['ZooKeys', 9],
    ['Zootaxa', 7],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=64)',
    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);