function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Antarctic Research Series', 4],
    ['Biological Reports of the Soviet Antarctic Expedition [1955 - 1958]', 5],
    ['Copeia', 1],
    ['Discovery Reports', 1],
    ['Inst. Antarct. Argent.', 1],
    ['J. L. B. Smith Institute of Ichthyology Special Publication', 1],
    ['Proceedings of the Biological Society of Washington', 2],
    ['Voprosy Ikhtiologii', 1],
    ['ZooKeys', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=17)',
    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);