function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Backhuys', 2],
    ['Bishop Museum Bulletin in Entomology', 4],
    ['Bulletin of the American Museum of Natural History', 3],
    ['Carolum Reichard', 2],
    ['Deutsche Entomologische Zeitschrift', 8],
    ['Eberhard Klett et Franck', 6],
    ['Far Eastern Entomologist', 3],
    ['Fauna of New Zealand', 3],
    ['Insecta Mundi', 9],
    ['Ioannis Thomae Trattner', 2],
    ['Journal of Natural History', 17],
    ['Laurentius Salvius', 38],
    ['Palaeoentomology', 4],
    ['Zoological Systematics', 6],
    ['Zootaxa', 299],
    ['Other (18)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=428)',
    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);