function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 14],
    ['African invertebrates', 4],
    ['Basteria', 1],
    ['Beaufortia', 1],
    ['Bulletin of Malacology, Taiwan', 1],
    ['Molluscan Research', 1],
    ['Mémoires du Muséum National d’Histoire Naturelle', 12],
    ['Mémoires du Muséum national d\'Histoire naturelle', 18],
    ['PaleoBios', 1],
    ['Records of the Australian Museum', 15],
    ['Sarsia', 1],
    ['Venus', 1],
    ['Zoologische Verhandelingen, Leiden', 5],
    ['Zoosystema', 32],
    ['Zootaxa', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=112)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);