function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 2],
    ['Hydrobiologia', 1],
    ['Journal of Natural History', 13],
    ['Mem. Soc Zool Fr', 1],
    ['Nauplius', 5],
    ['Pap Proc R Soc Van Dieman\'s Land', 1],
    ['The Journal of the Linnean Society of London, Zoology', 1],
    ['Zoological Journal of the Linnean Society', 6],
    ['Zootaxa', 67]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=97)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);