function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beyarslan, A. & Yurtcan, M. & Çetin, Ö. & Aydogdu, M.', 1],
    ['Broad, Gavin R.', 16],
    ['Cushman, R. A.', 1],
    ['Fullaway, D. T.', 1],
    ['Gadallah, N. S. & Ghahari, H. & Monaem, R. & Jussila, R.', 3],
    ['Ghahari, H. & Jussila, R.', 1],
    ['Kolarov, J.', 7],
    ['Rousse, P. & Noort, S. Van', 3],
    ['Rousse, Pascal & Villemant, Claire & Seyrig, Andre', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);