function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De, Gilberto J. & Narita, João P. Z.', 3],
    ['Evans, G. Owen', 1],
    ['Khalili-Moghadam, Arsalan & Saboori, Alireza', 9],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 2],
    ['Masan, Peter', 23],
    ['Narita, João P. Z. & De, Gilberto J. & Fernando, Liyanage C. P.', 3],
    ['Narita, João Paulo Z. & Pédelabat, Marie', 1],
    ['Prasad, V.', 1],
    ['da Silva, Renan V. & Narita, João Paulo Z.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    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);