function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin des Travaux Publiés par la Station d’Aquiculture et de Pêche de Castiglione', 1],
    ['Cimbebasia', 1],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['European Journal of Taxonomy', 5],
    ['Jornal de Sciencias Mathematicas, Physicas e Naturaes', 1],
    ['Journal of Natural History', 1],
    ['Proceedings of the Zoological Society of London, B', 1],
    ['South African Journal of Science', 1],
    ['Zootaxa', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);