function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad-Hosseini, Mohammad & Jafari, Shahriar', 2],
    ['Barbar, Ziad', 2],
    ['Bingül, Meryem & Doğan, Salih & Dilkaraoğlu, Sibel', 3],
    ['Doustaresharaf, Mojtaba Mohammad & Bagheri, Mohammad', 2],
    ['Doğan, Salih & Doğan, Sibel', 2],
    ['Doğan, Sibel & Doğan, Salih & Erman, Orhan', 7],
    ['Doġan, Salih', 10],
    ['Dönel, Güldem & Doğan, Salih', 12],
    ['Khanjani, M. & Amini, F. & Khanjani, M.', 3],
    ['Khanjani, Mohammad & Izadi, Hamzeh & Fayaz, Bahman Asali', 3],
    ['Khaustov, A. A.', 6],
    ['Khaustov, Alexander A.', 7],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 11],
    ['Mohammad-Doustaresharaf, Mojtaba & Bagheri, Mohammad', 7],
    ['Yali, Maryam Pahlavan & Khanjani, Mohammad & Razmjou, Jabraeil', 4],
    ['Other (12)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=100)',
    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);