function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arthropoda Selecta', 2],
    ['Biodiversity Data Journal', 16],
    ['Caucasian Entomological Bulletin', 1],
    ['Cladistics', 4],
    ['Entomologische Abhandlungen und Berichte aus dem Museum für Tierkunde in Dresden', 1],
    ['European Journal of Taxonomy', 6],
    ['Far Eastern Entomologist', 1],
    ['Invertebrate Systematics', 5],
    ['Journal of Arachnology', 1],
    ['Phelsuma', 1],
    ['Proceedings of the Japanese Society of Systematic Zoology', 1],
    ['ZooKeys', 10],
    ['Zoology in the Middle East', 4],
    ['Zoosystema', 4],
    ['Zootaxa', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=80)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);