function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aspects of Nonmarine Cretaceous Geology', 1],
    ['Cretaceous Research', 1],
    ['Fourth Symposium on Mesozoic Terrestrial Ecosystems', 1],
    ['Journal of Vertebrate Paleontology', 2],
    ['Mesozoic Vertebrate Life', 1],
    ['National Museum of Natural Sciences, Publications in Palaeontology, No. 1', 2],
    ['New Mexico Museum of Natural History and Science Bulletin', 1],
    ['Palaeontologica Polonica', 1],
    ['PeerJ', 1],
    ['Scientific Reports', 2],
    ['The Dinosauria', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);