function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 22],
    ['Gadallah, N. S. & Ahmed, R. S. & Heneidy, A. H. El-', 1],
    ['Gadallah, Neveen S. & Edmardash, Yusuf A. & Mansour, Amany N.', 1],
    ['Han, Yuan-Yuan & Achterberg, Kees Van & Chen, Xue-Xin', 7],
    ['Kolarov, J.', 6],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 2],
    ['Riedel, Matthias & Ameri, Ali & Talebi, Ali Asghar', 2],
    ['Riedel, Matthias & Diller, Erich & Japoshvili, George', 3],
    ['Scaramozzino, Pier Luigi & Giovanni, Filippo Di & Loni, Augusto', 2],
    ['Sheng, Mao-Ling & Li, Tao & Cao, Jiang-Feng', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);