function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barriera, Gabrielle', 35],
    ['Becherer', 5],
    ['Blume, Carl Ludwig von', 3],
    ['Doweld, Alexander B.', 5],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 4],
    ['Jarvis, Charlie', 8],
    ['Lin, Yun & Bi, Hai-Yan & Sun, Jun & Sun, Qian', 5],
    ['Linnaeus, Carolus', 7],
    ['Merrill, Elmer Drew & Perry, Lily May', 5],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 9],
    ['Nuraliev, Maxim S. & Schori, Melanie & Tagane, Shuichiro', 4],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 6],
    ['Rio, Cédric Del & Stull, Gregory W. & Franceschi, Dario De', 6],
    ['Sleumer, Hermann Otto', 5],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 8],
    ['Other (19)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=138)',
    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);