function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica Polonica', 4],
    ['Biodiversity Data Journal', 1],
    ['Bulletin of the Department of Zoology University of the Panjab (New Series)', 1],
    ['Journal of the Egyptian Society of Parasitology', 1],
    ['Philippine Journal of Science', 1],
    ['Proceedings of Parasitology', 1],
    ['Proceedings of the Indian Academy of Sciences, Section B', 1],
    ['Revista Cienc vet Lourenco Marques (Ser A)', 1],
    ['Soobshcheniya Akademii Nauk Gruzinskoi SSR', 2],
    ['Transactions of the American Microscopical Society', 2],
    ['Zoologische Jahrbuecher Abteilungen für Systematik', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);