function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 18],
    ['Bolletino della Società Adriatica di Scienze Naturali in Trieste', 23],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 9],
    ['Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten', 8],
    ['Journal of Natural History', 70],
    ['Proceedings of the United States National Museum, 3', 13],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 19],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 15],
    ['Sumtibus Augusti Rücker', 26],
    ['Sumtibus Mauritii Librarii', 7],
    ['United States Fish Commission Bulletin for 1899', 9],
    ['Zoologische Jahrbucher, Abteilung für Systematik', 9],
    ['Zoologischer Anzeiger', 8],
    ['Zoosystema', 31],
    ['Zootaxa', 71],
    ['Other (64)', 118]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=454)',
    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);