function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 2],
    ['Memoires de l\'Institut Français d\'Afrique Noire', 1],
    ['Mitteilungen der Schweizerischen Entomologischen Gesellschaft', 1],
    ['Revue de la Faculté des Sciences de l\'Université d\'Istanbul', 1],
    ['Zoologischer Anzeiger', 1],
    ['Zootaxa', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);