function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Batalleria', 1],
    ['Biodiversity Data Journal', 1],
    ['Deterville', 1],
    ['Ex Officina Gleditschiana', 4],
    ['Geodiversitas', 3],
    ['Journal of the Geological Society of Australia', 2],
    ['Journal of the Palaeontological Society of India', 1],
    ['Palaeontologia Indica, XIV', 1],
    ['Smithsonian Miscellaneous Collections', 2],
    ['Southeastern Geology', 1],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zoosystema', 1],
    ['Zootaxa', 62]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=82)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);