function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bagheri, M. & Shirinbeik Mohajer, S. & Saboori, A.', 3],
    ['Bagheri, Mohammad & Gheblealivand, Saeide S. & Zarei, Elham', 1],
    ['Doġan, Salih', 2],
    ['Dönel, Güldem & Doğan, Salih', 2],
    ['Ebrahimi, Najmeh & Noei, Javad', 2],
    ['Fan, Qing-Hai & Zhang, Zhi-Qiang', 1],
    ['Hatami, Parisa & Jafari, Shahriar & Ahmad-Hosseini, Mohammad', 1],
    ['Khosravinejad, Maryam & Jafari, Shahriar & Paktinat-Saeij, Saeid', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Mohammad-Doustaresharaf, Mojtaba & Bagheri, Mohammad', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);