function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bellini, Bruno Cavalcante & Greenslade, Penelope', 3],
    ['Bellini, Bruno Cavalcante & Morais, José Wellington De', 1],
    ['Cipola, Nikolas Gioia', 1],
    ['Greenslade, Penelope', 1],
    ['Jantarit, Sopark & Bedos, Anne & Deharveng, Louis', 5],
    ['Ma, Yitong & Chen, Jian-Xiu', 2],
    ['Nguyen, Anh T. T. & Thuy, Kim N. & Arbea, Javier I.', 3],
    ['Ospina-Sanchez, Claudia Marcela & Soto-Adames, Felipe N', 2],
    ['Ren, Yuanhao & Li, Zhaohui & Zhang, Feng', 1],
    ['Xisto, Thiago & Mendonça, Maria Cleide De', 2],
    ['Xu, Guo-Liang & Zhang, Feng', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);