function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 2],
    ['Biol. Results " Endeavour "', 1],
    ['Bulletin from the Laboratories of Natural History of the State University of Iowa', 1],
    ['Bulletin of Marine Science', 1],
    ['Copeia', 1],
    ['Cybium', 1],
    ['European Journal of Taxonomy', 4],
    ['Memoirs of the Indian Museum', 1],
    ['Notulae Naturae', 1],
    ['Proceedings of the Zoological Society of London, B', 1],
    ['Raffles Bulletin of Zoology', 7],
    ['Zootaxa', 31]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=52)',
    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);