function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 1],
    ['Crustacean Research.', 1],
    ['Hoffmann', 1],
    ['Journal of Natural History', 33],
    ['Nauplius', 1],
    ['Occasional Papers of the Bernice P. Bishop Museum', 1],
    ['Proceedings of the Japanese Society of Systematic Zoology', 1],
    ['Raffles Bulletin of Zoology', 94],
    ['Treubia, Mus. Zool. Borgoriense', 1],
    ['ZooKeys', 5],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zoosystema', 6],
    ['Zootaxa', 123]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=270)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);