function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de Parasitologie Humaine et Comparée', 8],
    ['Biodiversity Data Journal', 39],
    ['Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten', 12],
    ['Japanese Journal of Zoology', 11],
    ['Journal of Parasitology', 33],
    ['Parasitology International', 15],
    ['Philippine Journal of Science', 8],
    ['Proceedings of the Helminthological Society of Washington', 7],
    ['Revue de Zoologie et de Botanique Africaines', 9],
    ['Systematic Parasitology', 9],
    ['Zeitschrift für Parasitenkunde', 11],
    ['Zoodiversity', 24],
    ['Zoologische Jahrbuecher Abteilungen für Systematik', 10],
    ['Zoologischer Anzeiger', 15],
    ['Zootaxa', 149],
    ['Other (124)', 229]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=589)',
    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);