function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 5],
    ['Ameri, Ali & Talebi, Ali Asghar & Beyarslan, Ahmet', 1],
    ['Beyarslan, Ahmet', 4],
    ['Gadallah, Neveen S. & Edmardash, Yusuf A. & Mansour, Amany N.', 2],
    ['Ghahari, H. & Fischer, M. & Sakenin, H. & Imani, S.', 1],
    ['Loni, Augusto & Samartsev, Konstantin G.', 3],
    ['Mifsud, David & Farrugia, Lucia & Shaw, Mark R.', 1],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 1],
    ['Scaramozzino, Pier Luigi & Loni, Augusto & Lucchi, Andrea', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);