function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 3],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 2],
    ['Annales des Sciences Naturelles, Zoologie, Série 5', 1],
    ['Anzeiger', 1],
    ['Archives du Museum National d\'Histoire Naturelle, 6', 1],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 2],
    ['F. G. Levrault', 1],
    ['F. S. Hübschmann, Monachii [= Munich] & Fleischer, Lipsiae [= Leipzig]', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 5],
    ['Novi Commentarii Academiae Scientiarum Instituti Bononiensis', 1],
    ['Proceedings of the Linnean Society of New South Wales', 6],
    ['Proceedings of the Zoological Society of London, B', 3],
    ['Repertorio Fisico-Natural de la Isla de Cuba', 1],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=35)',
    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);