function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 13],
    ['Adansonia: Recueil d\'Observations Botaniques', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 6],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 5],
    ['Insecta Mundi', 1],
    ['Laurentius Salvius', 14],
    ['Linzer biologische Beiträge', 7],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 19],
    ['Papéis Avulsos de Zoologia', 5],
    ['PhytoKeys', 11],
    ['Phytotaxa', 16],
    ['Plant Ecology and Evolution', 9],
    ['Revista Brasileira de Entomologia', 1],
    ['Revue suisse de Zoologie', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=110)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);