function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zootaxonomica Sinica', 2],
    ['Annales de Parasitologie Humaine et Comparée', 1],
    ['Bulletin de l\'Institut Francais d\'Afrique Noire, Série A, Sciences Naturelles', 1],
    ['Izdatel\'svo " Nauka "', 1],
    ['Japanese Journal of Zoology', 1],
    ['Keigaku Publishing Company', 2],
    ['Kwahak Wontongbo', 1],
    ['Nauchnye Doklady Vysshei Shkoly Biologicheskie Nauki', 1],
    ['Pakistan Journal of Scientific and Industrial Research', 2],
    ['Parazitologiya', 6],
    ['Proceedings of the National Academy of Sciences of India Allahabad', 1],
    ['Studia Marina Sinica', 1],
    ['Zootaxa', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=21)',
    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);