function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Sinica', 3],
    ['Acta Zootaxonomica Sinica', 1],
    ['Angewandte Parasitologie', 3],
    ['Egyptian University, Faculty of Medicine, Publication No. 12', 2],
    ['Indian Journal of Helminthology', 2],
    ['Journal of Parasitology', 3],
    ['Journal of the Fujian Teacher\'s University, Natural Science', 2],
    ['Memórias do Instituto Oswaldo Cruz', 3],
    ['Papers from the Tortugas Laboratory of the Carnegie Institute of Washington', 5],
    ['Parasitology', 2],
    ['Proceedings of the Indian Academy of Sciences, Section B', 2],
    ['Systematic Parasitology', 4],
    ['Transactions of the American Microscopical Society', 3],
    ['Zoosystema', 3],
    ['Zootaxa', 7],
    ['Other (21)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=66)',
    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);