function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Buyck, Bart & Eyssartier, Guillaume & Armada, François', 3],
    ['Cervini, Mario', 2],
    ['Dovana, Francesco & Bizio, Enrico & Garbelotto, Matteo', 1],
    ['Esteve-Raventós, Fernando & Pancorbo, Fermín & Larsson, Ellen', 4],
    ['He, Pan-Min & Fan, Yu-Guang & Deng, Lun-Sha & Yu, Wen-Jie', 1],
    ['Kaygusuz, Oğuzhan & Bandini, Ditte & Çelik, Ali', 1],
    ['Kuo, Michael & Matheny, P. Brandon', 1],
    ['Li, Sai Nan & Xu, Fei & Jiang, Ming & Liu, Feng & Wu, Fang', 2],
    ['Raghoonundon, Bhavesh & Vadthanarat, Santhiti & Hu, Yuwei', 1],
    ['Razzaq, Annum & Naseer, Arooj & Khalid, Abdul Nasir', 1],
    ['Rodríguez-Campo, Francisco J. & Bandini, Ditte & Olariaga, Ibai', 1],
    ['de la Fuente, Javier Isaac & García-Jiménez, Jesús', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);