function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blume, Carl Ludwig von', 2],
    ['Braga, João Marcelo Alvarenga', 7],
    ['Cock, Matthew J. W. & Congdon, T. Colin E. & Collins, Steve C.', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Franco, P. & Dahms, H. - U. & Lo, W. - T. & Hwang, J. - S.', 2],
    ['Hagberg, Mats & Eriksson, Roger', 21],
    ['Healy, John M. & Mikkelsen, Paula M. & Bieler, Rüdiger', 1],
    ['Jarvis, Charlie', 3],
    ['Jongkind, Carel C. H.', 2],
    ['Karunarathne, Krishan D. & Croos, M. D. S. T. De', 1],
    ['Ley, Alexandra C. & Classen-Bockhoff, Regine', 8],
    ['Linnaeus, Carolus', 1],
    ['Oliveira, Adriana & Bove, Claudia', 2],
    ['Saka, Mariana N. & Lombardi, Julio A.', 2],
    ['Yeshwanth, H. M. & Konstantinov, Fedor V.', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    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);