function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 1],
    ['Ebersole, Jun A. & Cicimurri, David J. & Stringer, Gary L.', 2],
    ['Ebert, David A. & White, William T. & Ho, Hsuan-Ching', 1],
    ['Ebert, David A. & Wintner, Sabine P. & Kyne, Peter M.', 2],
    ['Evermann, Barton Warren & Jenkins, O. P.', 1],
    ['Fernando, Daniel & Bown, Rosalind M. K. & Tanna, Akshay', 1],
    ['Jones, Christian M. & Driggers Iii, William B.', 2],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Müller, J.', 1],
    ['Müller, J. & Henle, F. G. J.', 2],
    ['Pradeep, Hosahalli Divakar & Swapnil, Shivdas Shirke', 1],
    ['White, William T. & Ko’Ou, Alfred', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);