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', 4],
    ['Biodiversity Data Journal', 17],
    ['Bulletin of the United States Fish Commission', 4],
    ['Check List', 3],
    ['European Journal of Taxonomy', 4],
    ['Journal of Natural History', 5],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 5],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 4],
    ['Proceedings of the Linnean Society of New South Wales', 10],
    ['Records of the Australian Museum', 4],
    ['Records of the Zoological Survey of India', 6],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 5],
    ['Zoological studies', 4],
    ['Zootaxa', 122],
    ['Other (39)', 52]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=252)',
    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);