function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alpine Entomology', 1],
    ['Biodiversity Data Journal', 2],
    ['Bulletin B P Bishop Mus', 2],
    ['Entomo Helvetica', 11],
    ['Insect Systematics and Diversity', 22],
    ['Insects of Guam II', 3],
    ['Journal of Insect Science', 1],
    ['Mitteilungen Der Schweizerischen Entomologischen Gesellschaft', 20],
    ['Mitteilungen der Schweizerischen Entomologischen Gesellschaft', 4],
    ['Paleontologia Electronica', 1],
    ['Revue suisse de Zoologie', 2],
    ['The Entomologist\'s Monthly Magazine, Second Series', 5],
    ['Zoological Journal of the Linnean Society', 1],
    ['Zootaxa', 82]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=157)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);