function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Crawley W. C.', 1],
    ['Crawley, W. C.', 2],
    ['Emery, C.', 8],
    ['Forel, A.', 67],
    ['Gratiashvili, N. & Barjadze, S.', 1],
    ['LaPolla, J. S. & Brady, S. G. & Shattuck, S. O.', 2],
    ['Lapeva-Gjonova, Albena & Antonova, Vera', 2],
    ['Mayr, G.', 7],
    ['Mayr, Gustav', 2],
    ['Roger, J.', 3],
    ['Santschi, F.', 7],
    ['Ward, P. S.', 4],
    ['Wheeler, W. M.', 3],
    ['Williams, Jason L.', 15],
    ['Williams, Jason L. & Lapolla, John S.', 4],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=133)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);