function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezděčka, P. & Bezděčková, K.', 1],
    ['Bolton, B.', 16],
    ['Bolton, B. & Sosa-Calvo, J. & Fernà ¡ ndez, F. & Lattke, J. E.', 6],
    ['Eguchi, K. & Viet, B. T. & Yamane, S.', 1],
    ['Guénard, Benoit & Mccaffrey, Katherine A. & Lucky, Andrea', 11],
    ['Lapeva-Gjonova, Albena & Antonova, Vera', 1],
    ['Makhan, D.', 6],
    ['Paknia, O. & Radchenko, A. & Pfeiffer, M.', 1],
    ['Roger, J.', 2],
    ['Ward, P. S.', 5],
    ['Wild, A. L.', 12],
    ['Wild, Alexander L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);