function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bester, Stoffel P. & Herman, Paul P. J. & Klopper, Ronell R.', 1],
    ['Blume, Carl Ludwig von', 1],
    ['Boatwright, James Stephen & Manning, John Charles', 2],
    ['Castillon, Jean-Bernard', 2],
    ['Coquillett, Daniel William', 1],
    ['Evenhuis, Neal L.', 1],
    ['Grace, Olwen M. & Klopper, Ronell R. & Smith, Gideon F.', 4],
    ['Hallier, Hans (Johannes) Gottfried', 3],
    ['Hernández-Suárez, Estrella & Martin, Jon H. & Gill, Raymond J.', 1],
    ['Jarvis, Charlie', 28],
    ['Jean-Philippe Castillon', 2],
    ['Kumar, Suresh & Purohit, C. S. & Kulloli, Ravikiran N.', 2],
    ['Linnaeus, Carolus', 23],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 1],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    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);