function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 7],
    ['Anzeiger', 7],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 11],
    ['European Journal of Taxonomy', 13],
    ['Journal of Natural History', 8],
    ['Laurentius Salvius', 8],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 8],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 31],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 6],
    ['Proceedings of the Linnean Society of New South Wales', 15],
    ['Proceedings of the Zoological Society of London, B', 15],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 7],
    ['Trudy St. Petersburg. Obsh. Estestv.', 8],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 23],
    ['Zootaxa', 34],
    ['Other (112)', 172]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=373)',
    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);