function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Basilewsky, S.', 1],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 2],
    ['Bonaparte, Charles Lucien', 1],
    ['Borodin, N. A.', 1],
    ['Broussonet, P. M. A.', 2],
    ['Forsskål, Peter', 3],
    ['Grimm, O. von', 2],
    ['Hamilton, F. Buchanan', 2],
    ['Kishinouye, K.', 3],
    ['Linnaeus, Carolus', 11],
    ['Mitchill, S. L.', 5],
    ['Richardson, John', 2],
    ['Rüppell, Wilhem Peter Eduard Simon', 3],
    ['Steindachner, F.', 2],
    ['Other (15)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=56)',
    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);