function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bahirai, Fereshteh & Jafari, Shahriar & Lotfollahi, Parisa', 1],
    ['Huang, Kun-Wei & Wang, Chin-Fah', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 8],
    ['Lotfollahi, Parisa & Irani-Nejad, Karim Haddad', 1],
    ['Manchao Xie', 3],
    ['Navia, Denise & Gondim, Manoel G. C. & De, Gilberto J.', 1],
    ['Ruan, Hong-Yan & Shou, Ru-Fang & Lian, Ran-Ran & Tan, Meng-Chao', 1],
    ['Song, Zi-Wei & Xue, Xiao-Feng & Hong, Xiao-Yue', 8],
    ['XUE, XIAO-FENG & GUO, JING-FENG & HONG, XIAO-YUE', 5],
    ['XUE, XIAO-FENG & WANG, ZHEN & SONG, ZI-WEI & HONG, XIAO-YUE', 3],
    ['Xue, Xiao-Feng & Han, Xiao & Song, Zi-Wei & Hong, Xiao-Yue', 3],
    ['Xue, Xiao-Feng & Liu, Xin-Yu', 3],
    ['Xue, Xiao-Feng & Luo, Jia & Xu, Yun & Hong, Xiao-Yue', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 3],
    ['Xue, Xiao-Feng & Zhang, Zhi-Qiang', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);