function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ghahari, Hassan & Moulet, Pierre & Cai, Wanzhi & Karimi, Javad', 2],
    ['Krüger, Andreas', 1],
    ['Krüger, Andreas & Deckert, Jürgen', 2],
    ['Liu, Yingqi & Cai, Wanzhi', 1],
    ['Liu, Yingqi & Pluot-Sigwalt, Dominique & Guilbert, Eric', 17],
    ['Malipatil, M. B. & Liu, Yingqi & Cai, Wanzhi', 15],
    ['Putshkov, Pavel V. & Pluot-Sigwalt, Dominique', 1],
    ['Swanson, Daniel R.', 12],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 2],
    ['Yildirim, E. & Moulet, P. & Külekçi, G. & Bulak, Y.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);