function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Don E. Wilson & Russell A. Mittermeier', 2],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 4],
    ['Jenyns, L.', 1],
    ['Jo, Yeong-Seok & Baccus, John T. & Koprowski, John L.', 3],
    ['Karl F. Koopman', 3],
    ['Linnaeus, Carolus', 8],
    ['Pallas, Peter Simon', 4],
    ['Pearch, Malcolm J.', 1],
    ['Rosina, Valentina V. & Rummel, Michael', 1],
    ['Schinz, H. R.', 1],
    ['Turni, Hendrik & Kock, Dieter', 30],
    ['Wilson, Don E. & Reeder, DeeAnn', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);