function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cockerell, Theodore D. A.', 2],
    ['Cumming, Heather J. & Wheeler, Terry A.', 12],
    ['Cumming, Jeffrey M. & Cumming, Heather J.', 3],
    ['Dale E. Greenwalt & Daniel J. Bickel & Peter H. Kerr', 1],
    ['Evenhuis, Neal L. & Pape, Thomas', 1],
    ['Grimaldi, David A.', 17],
    ['Han, Shaolin & Yang, Ding', 1],
    ['McAlpine, David', 1],
    ['Meigen, Johann Wilhelm', 6],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Polevoi, Alexei & Ruokolainen, Anna & Shorohova, Ekaterina', 2],
    ['Rotheray, Graham & Lyszkowski, Richard', 1],
    ['Tkoc, Michal & Rohacek, Jindrich', 17],
    ['Tkoč, Michal', 1],
    ['Č, Michal Tko & Hara, Jaromír Va Ň', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);