function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Desjardins, Christopher A.', 2],
    ['Farsana, Raseena & Sureshan, P. M. & Nikhil, K.', 1],
    ['Gibson, Gary A. P.', 11],
    ['Kissayi, Khadija & Benhalima, Souâd & Mitroiu, Mircea-Dan', 2],
    ['Rahmani, Zahra & Rakhshani, Ehsan & Lotfalizadeh, Hossein', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);