function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De Moraes, G. J. & Zannou, I. D. & Oliveira, A. R.', 12],
    ['El-Banhawy, E. M. & Knapp, M.', 8],
    ['Guanilo, Alberto Daniel & Moraes, Gilberto José De', 1],
    ['Kreiter, Serge & Payet, Rose-My & Abo-Shnaf, Reham', 4],
    ['Kreiter, Serge & Payet, Rose-My & Azali, Hamza Abdou', 4],
    ['Kreiter, Serge & Payet, Rose-My & Douin, Martial', 3],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    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);