function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bassock Bayiha, Etienne D. & Nack, Jacques & Pariselle, Antoine', 2],
    ['Bouah, Enoutchy Fabrice & N\'Douba, Valentin & Pariselle, Antoine', 2],
    ['Boulenger, George Albert', 11],
    ['Daget, J.', 2],
    ['Fowler, Henry Weed', 2],
    ['Geerinckx, T. & Adriaens, D. & Teugels, G. G. & Verraes, W.', 8],
    ['Geerinckx, Tom & Vreven, Emmanuel', 3],
    ['Geerinckx, Tom & Vreven, Emmanuel & Dierick, Manuel', 11],
    ['Günther, Albert Charles Lewis Gotthilf', 3],
    ['Holly, M.', 2],
    ['Nichols, J. T. & Griscom, L.', 2],
    ['Pellegrin, J.', 4],
    ['Retzer, Michael E.', 10],
    ['Risch, L.', 4],
    ['Steindachner, F.', 3],
    ['Other (20)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    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);