function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aysan, Elif & Kumral, Nabi Alper', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 11],
    ['Li, Hao-Sen & Xue, Xiao-Feng & Hong, Xiao-Yue', 2],
    ['Lotfollahi, Parisa & De Lillo, Enrico', 3],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 5],
    ['Manson, David Charles MacKenzie', 4],
    ['Monfreda, Rosita & Lillo, Enrico De', 2],
    ['Rector, Brian G. & Petanović, Radmila U.', 2],
    ['Song, Zi-Wei & Xue, Xiao-Feng & Hong, Xiao-Yue', 7],
    ['XUE, XIAO-FENG & GUO, JING-FENG & HONG, XIAO-YUE', 4],
    ['Xue, Xiao-Feng & Han, Xiao & Song, Zi-Wei & Hong, Xiao-Yue', 7],
    ['Xue, Xiao-Feng & Hong, Xiao-Yue', 2],
    ['Xue, Xiao-Feng & Sadeghi, Hussein & Hong, Xiao-Yue', 2],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 8],
    ['Xue, Xiao-Feng & Zhang, Zhi-Qiang', 9],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=80)',
    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);