function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bandyopadhyay, Pritha & Karmakar, Krishna & Halliday, Bruce', 1],
    ['Britto, Erika P. J. & Lopes, Paula C. & De, Gilberto J.', 6],
    ['De Moraes, Gilberto J. & Britto, Erika P. J.', 19],
    ['De, Jeferson L. & Lindquist, Evert E. & De, Gilberto J.', 1],
    ['Ebrahimi, Najmeh & Noei, Javad', 3],
    ['Hassan, Mourad Fahmy & Ali, Fatma Samir & Nasr, Mahmoud Korashy', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Lin, Jian-Zhen', 1],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 2],
    ['Oliveira, Daniel C. & Chandrapatya, Angsumarn', 1],
    ['Rueda-Ramírez, Diana & Varela, Amanda & De Moraes, Gilberto J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);