function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Geng, Kun & Zhang, Bin & Song, Yu & Hyde, Kevin D.', 1],
    ['Gu, Mo & Hu, Dong-Wei & Han, Bing & Jiang, Ning', 1],
    ['Hsu, Sheng-Yu & Xu, Yuan-Cheng & Lin, Yu-Chen & Chuang, Wei-Yu', 5],
    ['Huanaluek, Naruemon & Jayawardena, Ruvishika S.', 2],
    ['Li, Hua & Manawasinghe, Ishara S. & Zhang, Yunxia', 2],
    ['Song, Yu & Geng, Kun & Zhang, Bin & Hyde, Kevin D.', 2],
    ['Tian, Shangqing & Xu, Rong & Bhunjun, Chitrabhanu S.', 1],
    ['Tibpromma, Saowaluck & Hyde, Kevin D. & Bhat, Jayarama D.', 2],
    ['Wang, Yifeng & Tsui, Kin-Ming & Chen, Shimei & You, Chongjuan', 3],
    ['Zhang, Zhaoxue & Liu, Rongyu & Liu, Shubin & Mu, Taichang', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);