function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gao, Chuan-Bu & Bai, Ming & Fang, Hong & Li, Jun', 3],
    ['Gao, Chuan-Bu & Bai, Ming & Fang, Hong & Yu, Zhi-Guo', 24],
    ['Gao, Chuan-Bu & Li, Yan & Fang, Hong', 2],
    ['Gao, Chuan-bu & Coca-Abia, María Milagro', 60],
    ['Li, Chun-Lin & Yang, Ping-Shih & Wang, Chuan-Chan', 8],
    ['Pham, Phu Van & Keith, Denis & Pham, Nhi Thi', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=102)',
    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);