function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoológica Lilloana', 8],
    ['Biodiversity Data Journal', 6],
    ['Bulletin of the British Ornithologists’ Club', 7],
    ['Bulletin of the Florida Museum of Natural History', 1],
    ['Check List', 12],
    ['Deterville', 1],
    ['Laurentius Salvius', 11],
    ['Nouveau dictionnaire d\'histoire naturelle [ed. 2]', 2],
    ['Papéis Avulsos de Zoologia', 2],
    ['Treuttel', 2],
    ['Utrecht', 2],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zoosystema', 14],
    ['Zoosystematics and Evolution', 2],
    ['Zootaxa', 12],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=99)',
    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);