function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 10],
    ['Abhandlungen Privat-Ges. Oberdeutschl.', 1],
    ['An. Cienc. Nat. Inst. José Acosta, Madrid', 1],
    ['Anales del Museo Nacional de Historia Natural de Montevideo, Serie 2', 1],
    ['Handl. Svenska Vet. Akad.', 2],
    ['Henrico Lichtenstein', 3],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 2],
    ['Kongelige Danske Videnskabernes Selskab Skrifter (Nya Samlinger)', 2],
    ['Laurentii Salvii', 7],
    ['Laurentius Salvius', 30],
    ['Nova Acta Acad. Leop. - Carol.', 3],
    ['Raffles Bulletin of Zoology', 3],
    ['Transactions of the Linnean Society of London', 3],
    ['Vet. Acad. Nya Handl., Stockholm', 3],
    ['Zootaxa', 3],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=94)',
    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);