function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barroso-Barcenilla, Fernando & Antunes, Miguel Telles', 2],
    ['Dzyuba, O. S.', 4],
    ['Dzyuba, O. S. & Nalnyaeva, T. I.', 1],
    ['Dzyuba, Oksana S. & de Lagausie, Benoît', 3],
    ['Fuchs, Dirk & Heyng, Alexander M. & Keupp, H.', 1],
    ['Lamarck, J. B. P. A. de M. de', 2],
    ['Logan, W. N.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);