function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['David, K. J. & Ramani, S.', 17],
    ['David, Karamankodu Jacob & Abhishek, Venkateshaiah', 5],
    ['El-Hawagry, Magdi S.', 1],
    ['Korneyev, S. V. & Hauser, M. & Borkent, C. & Maples, B. K.', 21],
    ['Leblanc, Luc', 7],
    ['Leblanc, Luc & Hossain, M. Aftab & Doorenweerd, Camiel', 1],
    ['Leblanc, Luc & Hossain, M. Aftab & Momen, Mahfuza', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);