function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annalen des Naturhistorischen Museums in Wien', 5],
    ['Bulletin de la Société Philomathique de Paris, Série 8', 1],
    ['Check List', 1],
    ['Cybium', 1],
    ['European Journal of Taxonomy', 1],
    ['Ezhegodnik Zoologicheskogo Muzeya Imperatorskogo Akademii Nauk', 1],
    ['Förh. Skand. Naturf.', 1],
    ['Geological Survey of Canada Contributions to Canadian Palaeontology', 1],
    ['Laurentius Salvius', 5],
    ['Nouveaux Mémoires de la Société Impériale des Naturalistes de Moscou', 2],
    ['Novi Commentarii Academiae Scientiarum Imperialis Petropolitanae', 2],
    ['Philosophical Transactions of the Royal Society, B: Biological Sciences', 3],
    ['The Pacific', 3],
    ['Turkish Journal of Zoology', 6],
    ['Zootaxa', 14],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=56)',
    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);