function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 10],
    ['Bulletin of entomological research', 6],
    ['Can Ent', 4],
    ['Entomologist\'s monthly magazine', 6],
    ['Fauna of New Zealand', 5],
    ['Insecta Mundi', 126],
    ['Insects of Guam II', 6],
    ['Microentomology', 4],
    ['Proceedings of the Hawaiian Entomological Society', 6],
    ['Taxonomic Monographs on Neotropical Hymenoptera', 7],
    ['Transactions and proceedings of the New Zealand Institute', 17],
    ['Transactions and proceedings of the Royal Society of New Zealand', 7],
    ['ZooKeys', 223],
    ['Zoosystema', 51],
    ['Zootaxa', 248],
    ['Other (42)', 68]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=794)',
    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);