function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 1],
    ['Archives du Museum National d\'Histoire Naturelle, 6', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Bulletin of the British Museum (Natural History), Zoology Series', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Bulletin of the Vanderbilt Oceanographic Museum', 1],
    ['Check List', 3],
    ['European Journal of Taxonomy', 1],
    ['Hydrobiologia', 1],
    ['Japanese Journal of Ichthyology', 1],
    ['Journal of Natural History', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 5],
    ['Zootaxa', 10],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=41)',
    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);