function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bian, Xun & Liu, Jing & Yang, Zizhong', 2],
    ['Duan, Yue-Ting & Chen, Po-Wei & Shi, Fu-Ming', 2],
    ['Gorochov, Andrej V. & Dawwrueng, Pattarawich', 5],
    ['Ingrisch, Sigfrid', 19],
    ['Liu, Jing & Lu, Xiangyi & Zhang, Qianwen & Wu, Xiangyi', 10],
    ['Pang, Siyu & Zhang, Qianwen & Bian, Xun', 1],
    ['Peng, Xiaoyu & Yang, Zizhong & Bian, Xun', 3],
    ['Tan, Ming Kai & Abdul Wahab, Rodzay bin Haji', 1],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 1],
    ['Zhang, Qianwen & Bian, Xun', 3],
    ['Zhang, Qianwen & Yang, Tao & Bian, Xun', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);