function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 7],
    ['Bulletin of Entomological Research', 4],
    ['Contributions to Zoology', 4],
    ['Entomo Helvetica', 2],
    ['European Mosqito Bulletin', 5],
    ['Insects of Guam I', 4],
    ['Journal of Natural History', 7],
    ['Parasites & Vectors', 1],
    ['Proceedings of the Entomological Society of Washington', 2],
    ['Proceedings of the Hawaiian Entomological Society', 1],
    ['Zoological Journal of the Linnean Society', 23],
    ['Zoosystematica Rossica', 31],
    ['Zootaxa', 102]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=193)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);