function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anisyutkin, Leonid N.', 2],
    ['Guo, Lin & Zhang, Zhi-Yu & Cai, Jin-Zhuo & Wang, Zong-Qing', 4],
    ['Gupta, Sunil Kumar & Chandra, Kailash', 7],
    ['Yang, Rong & Wang, Zhenzhen & Zhou, Yanshuang & Wang, Zongqing', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);