function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Mexicana-Nueva Serie', 3],
    ['Ann. Gembloux', 1],
    ['Biodiversity Data Journal', 6],
    ['Bulletin of the Department of Agriculture, Jamaica', 1],
    ['Can Ent', 1],
    ['European Journal of Taxonomy', 2],
    ['Far Eastern Entomologist', 2],
    ['Insecta Mundi', 154],
    ['Journal of Natural History', 144],
    ['Proceedings of the Hawaiian Entomological Society', 5],
    ['Transactions and proceedings of the New Zealand Institute', 2],
    ['U. S. Department of Agriculture, Bureau of Entomology, Technical Series', 10],
    ['ZooKeys', 7],
    ['Zoological Systematics', 10],
    ['Zootaxa', 635],
    ['Other (15)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=998)',
    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);