function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Candan, Selami & Yilmaz, Fatma Sümeyye & Suludere, Zekiye', 1],
    ['Ghahari, Hassan & Moulet, Pierre & Rider, David A.', 3],
    ['Külekçi, G. & Yildirim, E. & Tezcan, S.', 1],
    ['Laterza, Ilaria & Tamburini, Giovanni & Panzarino, Onofrio', 1],
    ['Linnavuori, Rauno E.', 2],
    ['Roell, Talita & Lemaître, Valérie A. & Webb, Michael D.', 1],
    ['Tezcan, S. & Gulpercin, N. & Fent, M.', 1],
    ['Yazici, G. & Yildirim, E. & Moulet, P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);