function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College', 1],
    ['Bulletin of the United States Bureau of Fisheries', 2],
    ['Doklady Akademiia Nauk SSSR', 2],
    ['Förh. Skand. Naturf.', 1],
    ['Naturhistorisk Tidsskrift, Series 3', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Report of the United States Commissioner of Fish and Fisheries', 1],
    ['Russ. Gidrob. Zh., Saraton', 1],
    ['Species Diversity', 1],
    ['Zootaxa', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=18)',
    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);