function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dedov, Ivailo & Antonova, Vera', 2],
    ['Hausdorf, Bernhard', 36],
    ['Irikov, A.', 10],
    ['Maroulis, Leonidas & Vardinoyannis, Katerina & Karakasi, Danae', 1],
    ['Neiber, Marco T. & Hausdorf, Bernhard', 1],
    ['Neubert, Eike & Bariche, Michel', 7],
    ['Pienkowska, Joanna R. & Manganelli, Giuseppe & Giusti, Folco', 1],
    ['Plazzi, Federico & Pedroni, Guido', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);