function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Elie, Ntirenganya & Yajin, Li & Yanlan, Xie & Yanli, Zhou', 9],
    ['Li, Yajin & Li, Zhengyue & Zhang, Hongrui', 11],
    ['Masumoto, Masami & Okajima, Shûji', 11],
    ['Mound, Laurence A. & Tree, Desley J.', 2],
    ['Ng, Y. F. & Mound, L. A.', 1],
    ['Wang, Chin-Ling', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);