function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fuente, Javier Isaac De La & García-Jiménez, Jesús', 1],
    ['Jarvis, Charlie', 1],
    ['Lucini, Luigi & Colla, Giuseppe & Moreno, Maria Begoña Miras', 1],
    ['Paez, Carolina Pina & Healy, Rosanne A. & Guevara, Gonzalo', 2],
    ['Sammut, Carmel & Alvarado, Pablo & Vooren, Nicolas Van', 6],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);