function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Haliday, A. H.', 1],
    ['Kim, Chang-Jun & Copeland, Robert S. & Notton, David G.', 16],
    ['Kim, Chang-Jun & Notton, David G. & Ødegaard, Frode', 14],
    ['Liu, Jing-xian & Chen, Hua-yan & Xu, Zai-fu', 6],
    ['Notton, David G.', 1],
    ['Yan, Cheng-Jin & Peng, Yan-Qiong & Chen, Hua-Yan', 3],
    ['Zhang, Xiao & Chen, Hua-yan & Liu, Jing-xian & Luo, Shi-xiao', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);