function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 3],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 3],
    ['Annals of the Carnegie Museum', 2],
    ['Annals of the Queensland Museum', 2],
    ['D. Carlisle', 3],
    ['F. Schoell', 3],
    ['Journal of Natural History', 2],
    ['Laurentius Salvius', 2],
    ['Mölleri apud Heineck et Faber', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 9],
    ['Natuurkundige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen te Haarlem, Series 2', 2],
    ['Privately published', 2],
    ['Proceedings of the Linnean Society of New South Wales', 7],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 3],
    ['Zootaxa', 42],
    ['Other (32)', 36]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=123)',
    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);