function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 2],
    ['Bleeker, Pieter', 1],
    ['Bloch, Marcus Elieser & Schneider, J. G.', 4],
    ['Bonnaterre, Joseph Pierre', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Couch, J.', 1],
    ['Curtiss, A.', 3],
    ['Forsskål, Peter', 8],
    ['Linnaeus, Carolus', 11],
    ['Mitchill, S. L.', 2],
    ['Mylona, Dimitra', 2],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 2],
    ['Rafinesque, Constantine Samuel', 3],
    ['Rüppell, Wilhem Peter Eduard Simon', 2],
    ['Walbaum, J. J.', 2],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);