function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kovacs, Gabor & Prazsak, Istvan & Eichardt, Janos & Vari, Gabor', 1],
    ['Lin, Yejie & Li, Shuqiang & Zhao, Xin & Chen, Zhanqi', 2],
    ['Lin, Yejie & Marusik, Yuri M. & Gao, Caixia & Xu, Hao', 2],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 1],
    ['Miller, Jeremy A. & Griswold, Charles E. & Scharff, Nikolaj', 3],
    ['Naumova, Maria & Deltshev, Christo', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 1],
    ['Reboleira, Ana Sofia P. S. & Pérez, Antonio José', 1],
    ['Walckenaer, Charles Athanase', 1],
    ['Yanul, V. & Terekhova, V. & Polchaninova, N.', 2],
    ['ZONSTEIN, SERGEI & MARUSIK, YURI M.', 1],
    ['Zamani, Alireza & Altin, Çağatay & Szűts, Tamás', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);