function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 49],
    ['Basteria', 6],
    ['Biodiversity Data Journal', 5],
    ['Geodiversitas', 3],
    ['La Conchiglia', 8],
    ['Molluscan Research', 3],
    ['Mémoires du Muséum national d\'Histoire naturelle', 16],
    ['PaleoBios', 4],
    ['Records of the Australian Museum', 125],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 9],
    ['Zitteliana', 9],
    ['ZooKeys', 3],
    ['Zoological Journal of the Linnean Society', 4],
    ['Zoosystema', 74],
    ['Zootaxa', 28],
    ['Other (16)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=369)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);