function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['An, S. Do Ğ & Ayyildiz, N.', 2],
    ['Ardeshir, Fariba', 14],
    ['Baker, E. W.', 1],
    ['Baker, Edward W.', 5],
    ['Bochkov, Andre V. & Otto, Jurgen C.', 6],
    ['Ebrahimi, Najmeh & Noei, Javad', 16],
    ['Faradonbeh, Majid Moradi & Ostovan, Hadi & OConnor, Barry M.', 2],
    ['Fuangarworn, Marut & Lekprayoon, Chariya', 4],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 8],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 2],
    ['Salarzehi, Safoura & Hajizadeh, Jalil & Hakimitabar, Masoud', 18],
    ['Salarzehi, Safoura & Hajizadeh, Jalil & Ueckermann, Edward A.', 4],
    ['Skvarla, M. & Fisher, J. R. & Dowling, A. P. G.', 2],
    ['Xia, Bin & Klompen, Hans & Childers, Carl C.', 2],
    ['Other (17)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=105)',
    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);