function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Koenig', 1],
    ['Avian Research', 1],
    ['Biodiversity Data Journal', 24],
    ['Bulletin of the American Museum of Natural History', 20],
    ['Bulletin of the British Ornithologists\' Club', 1],
    ['Bulletin of the National Museum of Nature and Science, Series A (Zoology)', 1],
    ['Check List', 14],
    ['G. Levrault', 1],
    ['Gabriel Nicolaus Raspe', 1],
    ['Gebauer', 2],
    ['Laurentius Salvius', 17],
    ['Papéis Avulsos de Zoologia', 5],
    ['Transactions of the Linnean Society of London', 2],
    ['Zoological Journal of the Linnean Society', 7],
    ['Zootaxa', 11],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=114)',
    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);