function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Sinica', 1],
    ['Acta Zootaxonomica Sinica', 1],
    ['Annales de Parasitologie Humaine et Comparée', 2],
    ['Biodiversity Data Journal', 2],
    ['Bulletin International de l\'Académie des Sciences de Cracovie. Classe des Sciences Mathématiques et Naturelles, Reihe B, Biologi', 1],
    ['Bulletin of the Zoological Society of India', 1],
    ['Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten', 1],
    ['Indian Journal of Helminthology', 4],
    ['Philippine journal of science', 2],
    ['Proc. First All-India Congr. Zool.', 2],
    ['Proceedings of the Indian Academy of Sciences, Section B', 2],
    ['Proceedings of the National Academy of Sciences, India, Section B, Biological Sciences', 5],
    ['Rivista di Parassitologia', 7],
    ['Studies of the Zoological Laboratory, University of Nebraska', 2],
    ['Transactions of the American Microscopical Society', 2],
    ['Other (22)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=57)',
    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);