function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Able, K. W. & Felley, J. D.', 1],
    ['Ahl, E.', 7],
    ['Ayres, W. O.', 1],
    ['Baird, S. F. & Girard, Charles Frédéric', 1],
    ['Bean, T. H.', 1],
    ['Berkenkamp, H. O.', 1],
    ['Cope, Edward Drinker', 2],
    ['Garman, S.', 2],
    ['Girard, Charles Frédéric', 2],
    ['Jordan, David Starr', 2],
    ['Jordan, David Starr & Gilbert, Charles H.', 4],
    ['Lönnberg, E.', 2],
    ['Meinken, H.', 2],
    ['Paul V. Loiselle', 3],
    ['Vinciguerra, Decio', 2],
    ['Other (17)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);