function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ascanius, P.', 1],
    ['Dean, B.', 1],
    ['Didier, D. A.', 2],
    ['Fang, P. - W. & Wang, K. - F.', 2],
    ['Fowler, Henry Weed', 1],
    ['Garman, S.', 1],
    ['Gill, T. N.', 1],
    ['Jordan, David Starr & Snyder, John Otterbein', 3],
    ['Kemper, Jenny M. & Ebert, David A. & Naylor, G. J. P.', 1],
    ['Smith, H. M.', 1],
    ['Tanaka, Shigeho', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);