function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 15],
    ['Bulletin Proefstn Medan Sumatra', 1],
    ['Eberhard Klett et Franck', 1],
    ['Far Eastern Entomologist', 24],
    ['Fritz Wagner', 1],
    ['Insects of Guam I', 1],
    ['Journal of Insect Science', 1],
    ['Laurentius Salvius', 5],
    ['New Zealand journal of zoology', 3],
    ['Nicolai', 1],
    ['Pomona Coll J Ent', 1],
    ['Proceedings of the Hawaiian Entomological Society', 1],
    ['Proceedings of the Iowa Academy of Science', 2],
    ['Selbstverlag des Verfassers - in commission bei B. E. Tolman', 1],
    ['Zootaxa', 153],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=216)',
    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);