function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Memoirs of the College of Science, Kyoto Imperial University, Series B', 1],
    ['Proceedings of the Zoological Society of London', 5],
    ['Records of the Western Australian Museum', 2],
    ['Ruthenica, Russian Malacological Journal', 1],
    ['Strombus', 1],
    ['U. S. Geological Survey, Professional Paper', 1],
    ['Visaya', 1],
    ['Zoosystema', 4],
    ['Zootaxa', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=22)',
    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);