function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gajanayake, Achala J. & Jayawardena, Ruvishika S.', 1],
    ['Gu, Xin & Fu, Rong & Wang, Rui & Sun, Jing-Zu', 2],
    ['Gu, Xin & Wang, Rui & Sun, Quan & Wu, Bing & Sun, Jing-Zu', 4],
    ['Kamil, Deeba & Toppo, R. Sudeep & Choudhary, Shiv Pratap', 1],
    ['Mastan, Anthati & Rane, Digeshwar & Dastager, Syed G.', 2],
    ['Montoya, Quimi Vidaurre & Martiarena, Maria Jesus Sutta', 2],
    ['Qiao, Min & Du, Xing & Zhang, Zhe & Xu, JianPing & Yu, ZeFen', 3],
    ['Thokala, Prameeladevi & Narayanasamy, Prabhakaran & Kamil, Deeba', 9],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 38],
    ['Yang, Erfu & Lu, Wenhua & Tibpromma, Saowaluck & Dai, Dongqin', 2],
    ['Ye, Chuwen & Jing, Tingting & Sha, Yuru & Mo, Minghe & Yu, Zefen', 2],
    ['Zeng, Zhao-Qing & Zheng, Huan-Di & Wang, Xin-Cun', 11],
    ['Zhang, Guang-Zhi & Yang, He-Tong & Zhang, Xin-Jian', 5],
    ['Zhao, Rui & Mao, Li-Juan & Zhang, Chu-Long', 3],
    ['Zhu, Zhao-Xiang & Xu, Hao-Xiang & Zhuang, Wen-Ying & Li, Yu', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);