function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Australian Museum memoir', 2],
    ['Biodiversity Data Journal', 3],
    ['Fauna of New Zealand', 9],
    ['Insects of Guam I', 4],
    ['Journal of Natural History', 13],
    ['Laurentius Salvius', 3],
    ['Linzer biologische Beiträge', 1],
    ['Papéis Avulsos de Zoologia', 1],
    ['PhytoKeys', 1],
    ['Phytotaxa', 2],
    ['Proceedings of the Linnean Society of London, Zoology', 1],
    ['Zootaxa', 85]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=125)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);