function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Palaeontologica Polonica', 2],
    ['Anthropological Science', 1],
    ['Bulletin des Sciences par la Société Philomathique de Paris', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 4, Section C, Sciences de la Terre Paleontologie, Geologie, Mineralogie', 1],
    ['Check List', 1],
    ['Geodiversitas', 9],
    ['Mammal Species of the World (1 st Edition)', 13],
    ['Mammal Species of the World (2 nd Edition)', 17],
    ['Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1', 20],
    ['Mammalian Species', 1],
    ['Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen', 2],
    ['Paläontologische Zeitschrift', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=69)',
    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);