function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abou-Awad, B. A. & El-Sawaf, B. M. & Reda, A. S.', 2],
    ['Andre, H. M. & Zacharda, M. & N\'Dri, J. K.', 4],
    ['Halliday, R. B.', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 8],
    ['Strandtmann, R. W.', 1],
    ['Willmann, C.', 3],
    ['Zacharda, Miloslav', 10],
    ['Zacharda, Miloslav & Fong, Daniel & Hobbs Iii, Horton H.', 12],
    ['Zacharda, Miloslav & Grafitti, Giuseppe & Piva, Erminio', 7],
    ['Zacharda, Miloslav & Isaia, Marco & Piva, Erminio', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);