function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 7],
    ['American Med. Philos. Reg.', 2],
    ['Archives Néerlandaises des Sciences Exactes et Naturelles', 1],
    ['Cybium', 2],
    ['D. Carlisle', 2],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['F. Schoell', 4],
    ['Första Häftet', 1],
    ['Inaug. Dissert', 1],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 2],
    ['Laurentii Salvii', 2],
    ['Laurentius Salvius', 16],
    ['Mémoires de l\'Académie des Sciences de St. Pétersbourg, 7', 2],
    ['Proceedings of the American Philosophical Society', 2],
    ['Zootaxa', 4],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=57)',
    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);