function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexiou, Sotiris', 2],
    ['Allegrucci, G. & Massa, Bruno & Trasatti, A. & Sbordoni, V.', 1],
    ['Ciplak, Battal & Heller, Klaus-Gerhard & Willemse, Fer', 44],
    ['Hollier, John', 1],
    ['Mofidi-Neyestanak, Mohsen & Quicke, Donald L. J.', 2],
    ['Monnerat C. & Thorens P. & Walter T. & Gonseth Y.', 1],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 1],
    ['Taylan, Mehmet Sait & Mol, Abbas & Sevgili, Hasan & Şirin, Deniz', 3],
    ['Willemse, Luc & Tilmans, Jos & Kotitsa, Nefeli', 14],
    ['Ünal, Mustafa', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=76)',
    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);