function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 1],
    ['Australian zoologist', 5],
    ['Biodiversity Data Journal', 1],
    ['Bulletin of the American Museum of Natural History', 4],
    ['Check List', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Notes from the Leyden Museum', 2],
    ['Proceedings of the Linnean Society of New South Wales', 10],
    ['Proceedings of the Royal Society of Queensland', 2],
    ['Raffles Bulletin of Zoology', 2],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 3],
    ['Transactions of the Royal Society of South Australia', 2],
    ['Zoologische Verhandelingen, Leiden', 5],
    ['Zootaxa', 46],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=101)',
    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);