function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andriashev, A. P.', 12],
    ['Andriashev, A. P. & Neyelov, A. V.', 4],
    ['Becherer', 5],
    ['Burke, C. V.', 3],
    ['D. M. Moore (ed.)', 3],
    ['Elias Landolt', 4],
    ['Gilbert, Charles H.', 6],
    ['Gilbert, Charles H. & Burke, C. V.', 3],
    ['Jarvis, Charlie', 3],
    ['Lindberg, G. U.', 4],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 20],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 25],
    ['Stein, David L. & Chernova, N. V. & Andriashev, A. P.', 16],
    ['Stein, David L. & Tompkins, L. S.', 4],
    ['Vega, Hermes & Cetzal-Ix, William & Mó, Edgar', 5],
    ['Other (51)', 76]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=193)',
    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);