function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 2],
    ['Analyst', 1],
    ['Anthropozoologica', 2],
    ['Bulletin du Départment de L\'Agriculture aux Indes Néerlandaises', 1],
    ['European Journal of Taxonomy', 2],
    ['Laurentii Salvii', 2],
    ['Laurentius Salvius', 9],
    ['Mölleri apud Heineck et Faber', 8],
    ['Panckoucke', 2],
    ['Privately published', 3],
    ['Sanderiano Commissum', 4],
    ['Sanfilippo', 3],
    ['Schmerber', 2],
    ['Transactions of the Literary and Philosophical Society of New York', 2],
    ['Zootaxa', 6],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=61)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);