function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jočić, Ivona & Petanović, Radmila & Vidović, Biljana', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Li, De-Wei & Wei, Sui-Gai & Wang, Guo-Quan', 1],
    ['Lotfollahi, Parisa & de Lillo, Enrico', 1],
    ['Manchao Xie', 2],
    ['Wang, Guo-Quan & Tan, Meng-Chao & Yang, Juan', 2],
    ['XUE, XIAO-FENG & GUO, JING-FENG & HONG, XIAO-YUE', 1],
    ['Xue, Xiao-Feng & Han, Xiao & Song, Zi-Wei & Hong, Xiao-Yue', 1],
    ['Xue, Xiao-Feng & Zhang, Zhi-Qiang', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);