function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 23],
    ['African Invertebrates', 16],
    ['Belgian Journal of Entomology', 4],
    ['Biodiversity Data Journal', 26],
    ['Bulletin of the American Museum of Natural History', 25],
    ['European Journal of Taxonomy', 173],
    ['Far Eastern Entomologist', 52],
    ['Fauna of New Zealand', 33],
    ['Journal of Hymenoptera Research', 10],
    ['Linzer biologische Beiträge', 47],
    ['Papéis Avulsos de Zoologia', 9],
    ['Russian Entomological Journal', 5],
    ['ZooKeys', 15],
    ['Zoological Systematics', 7],
    ['Zootaxa', 35],
    ['Other (9)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=495)',
    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);