function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blackburn, T. & Cameron, P.', 3],
    ['Blackburn, T. & Kirby, William Forsell', 1],
    ['Blackburn, Thomas & Cameron, P.', 1],
    ['Bruneau, Anne & de Queiroz, Luciano Paganucci', 1],
    ['Cockerell, Theodore D. A.', 1],
    ['Crawford, J. C.', 1],
    ['Dathe, Holger H.', 1],
    ['Dathe, Holger H. & Proshchalykin, Maxim Yu.', 1],
    ['Fabricius, Johann Christian', 1],
    ['Hughes, Colin E. & Ringelberg, Jens J. & Lewis, Gwilym P.', 4],
    ['Jarvis, Charlie', 3],
    ['Miller, Joseph T. & Seigler, David', 1],
    ['RAMOS, KELLI S. & KAWADA, RICARDO & BRANDÃO, CARLOS ROBERTO F.', 6],
    ['Smith, Frederick', 2],
    ['Walker, Francis', 3],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);