function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['1. Conf. Soc Sud-Am. Hig.', 3],
    ['Biodiversity Data Journal', 1],
    ['Doklady Akademii Nauk Uzbekskoi SSR', 1],
    ['Exploration du Parc national Congo Belge Miss Baer & Gerber', 1],
    ['Fort Hare Papers', 2],
    ['Indian Journal of Helminthology', 2],
    ['Izvestiya. Arm. Fil. AN SSSR', 1],
    ['Japanese Journal of Zoology', 1],
    ['Journal of Parasitology', 1],
    ['Keigaku', 1],
    ['Osnovy Trematodologii', 2],
    ['Parazitologiya', 2],
    ['Philippine Journal of Veterinary Medicine', 2],
    ['Proceedings of the Helminthological Society of Washington', 2],
    ['Zoologische Jahrbuecher Abteilungen für Systematik', 2],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=34)',
    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);