function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bao, Shu-Xin & Xu, Rong-Ju & Zhu, Ying-An & Zhao, Qi', 1],
    ['Chen, Xue-Mei & Tang, Xia & Ma, Jian & Liu, Ning-Guo', 3],
    ['Karimi, Omid & Chethana, K. W. Thilini', 3],
    ['Li, Wen-Li & Liu, Zuo-Peng & Zhang, Tian & Dissanayake, Asha J.', 2],
    ['Shen, Hong-Wei & Bao, Dan-Feng & Boonmee, Saranyaphat', 6],
    ['Shen, Hong-Wei & Bao, Dan-Feng & Hyde, Kevin D. & Su, Hong-Yan', 4],
    ['Shi, Lin & Yang, Hao & Hyde, Kevin D. & Wijayawardene, Nalin N.', 2],
    ['Sun, Yaru & Goonasekara, Ishani D. & Thambugala, Kasun M.', 2],
    ['Xu, Rong-Ju & Li, Jun-Fu & Zhou, De-Qun & Boonmee, Saranyaphat', 3],
    ['Zhai, Zhi-Jun & Yan, Jun-Qing & Li, Wei-Wu & Gao, Yang', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);