function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zootaxonomica Sinica', 1],
    ['Archive of Fishery and Marine Research', 1],
    ['Cybium', 1],
    ['European Journal of Taxonomy', 3],
    ['Journal of the Royal Society of New Zealand', 1],
    ['Marine Biology Research', 1],
    ['Oceanologica et Limnologica Sinica', 6],
    ['Proceedings of the New England Zoölogical Club', 1],
    ['TINRO', 1],
    ['Zootaxa', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=42)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);