function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andriollo, Tommy & Blanc, Mickaël & Schönbächler, Cyril', 1],
    ['Ao, Weiguang & Zhang, Xubo & Ábrahám, Levente & Wang, Xili', 3],
    ['Badano, Davide & Pantaleoni, Roberto Antonio', 2],
    ['Bao, Rong & Wang, Xinli', 5],
    ['Hajiesmaeilian, Abolfazl & Shoushtari, Reza Vafaei', 1],
    ['Petersen, Nicholas Hüsig & Nielsen, Ole Fogh & Vilhelmsen, Lars', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);