function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bogorodsky, Sergey V. & Zajonz, Uwe & Saeed, Fouad N.', 1],
    ['Ebert, David A. & Wintner, Sabine P. & Kyne, Peter M.', 5],
    ['Fernando, Daniel & Bown, Rosalind M. K. & Tanna, Akshay', 1],
    ['Last, Peter R. & Henderson, Aaron C. & Naylor, Gavin J. P.', 1],
    ['Last, Peter R. & Séret, Bernard & Naylor, Gavin J. P.', 1],
    ['Weigmann, Simon & Ebert, David A. & Séret, Bernard', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);