function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 2],
    ['Catalogue of the Birds in the British Museum', 3],
    ['Check List', 16],
    ['Gabriel Nicolaus Raspe', 3],
    ['Journal of Vertebrate Paleontology', 3],
    ['Laurentius Salvius', 38],
    ['Papéis Avulsos de Zoologia', 14],
    ['Raffles Bulletin of Zoology', 5],
    ['The Open Ornithology Journal', 3],
    ['The Zoological Journal', 3],
    ['Utrecht', 4],
    ['Zoological Journal of the Linnean Society', 4],
    ['Zoosystema', 82],
    ['Zoosystematics and Evolution', 3],
    ['Zootaxa', 43],
    ['Other (15)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=243)',
    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);