function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benjamin White and Son', 3],
    ['Biodiversity Data Journal', 14],
    ['British Museum (Natural History) British Antarctic (" Terra Nova ") Expedition, 1910 Zoology', 3],
    ['F. Varrentrapp', 5],
    ['Journal of Natural History', 1],
    ['Pacific Science', 1],
    ['Poisson', 1],
    ['Report on the scientific results of the voyage of H. M. S. Challenger', 13],
    ['ZooKeys', 3],
    ['Zoological Journal of the Linnean Society', 8],
    ['Zoologische Mededelingen, Leiden', 36],
    ['Zoosystema', 7],
    ['Zootaxa', 184]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=279)',
    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);