function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baudouin, Imprimeur du Corps législatif et de l\'Institut national, place du Carrousel, N °. 662, an 6', 1],
    ['Bijdragen tot de Dierkunde', 1],
    ['Biodiversity Data Journal', 7],
    ['European Journal of Taxonomy', 6],
    ['Geodiversitas', 1],
    ['Journal of Natural History', 1],
    ['Laurentius Salvius', 5],
    ['New Zealand Geological Survey paleontological bulletin', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 11],
    ['ZooKeys', 5],
    ['Zootaxa', 40]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=81)',
    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);