function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bol. Mus. Hist. Nat. " Javier Prado " Lima', 2],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Check List', 1],
    ['Hydrobiologia', 1],
    ['Japanese Journal of Ichthyology', 1],
    ['Journal of Natural History', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Raffles Bulletin of Zoology', 1],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Revue Zoologique Africaine', 1],
    ['Smithsonian Miscellaneous Collections', 1],
    ['The Beagle. Records of the Museums and Art Galleries of the Northern Territory', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);