function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Afshari, Naghmeh & De Farias, Antonio R. G.', 1],
    ['Calabon, Mark S. & Jones, E. B. Gareth & Pang, Ka-Lai', 2],
    ['Chun-Sheng, Long & You-Peng, Wu & Xu, Zhang & Yan, Lin', 2],
    ['Dayarathne, Monika C. & Wanasinghe, Dhanushka N. & Devadatha, B.', 18],
    ['Dissanayake, Lakmali S. & Wijayawardene, Nalin N.', 6],
    ['Liu, Yu & Xu, Gui-Ping & Yan, Xin-Yi & Chen, Min-Hui & Gao, Yang', 1],
    ['Long, Sihan & Liu, Lili & Pi, Yinhui & Wu, Youpeng & Lin, Yan', 16],
    ['Peng, Ming-Kai & Zhang, Bo & Qu, Zhi & Li, Yu & Ma, Hai-Xia', 1],
    ['Shi, Lin & Yang, Hao & Hyde, Kevin D. & Wijayawardene, Nalin N.', 2],
    ['Vasilyeva, Larissa & Ma, Haixia', 12],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);