function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barnard, Keppel Harcourt', 1],
    ['Bleeker, Pieter', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 1],
    ['Chen, J. T. F.', 2],
    ['Chu, Y. - T. & Wu, H. - L. & Jin, Xin-Bo', 1],
    ['Cope, Edward Drinker', 2],
    ['De Vis, Charles Walter', 1],
    ['Fourmanoir, Pierre', 1],
    ['Gilbert, Charles H.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 2],
    ['Jordan, David Starr & Gilbert, Charles H.', 2],
    ['Poey, F.', 2],
    ['Regan, C. T.', 1],
    ['Seale, A.', 2],
    ['Smith, R. & Swain, J.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);