function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Evermann, Barton Warren & Radcliffe, L.', 1],
    ['Gilbert, Carter R.', 3],
    ['Gilbert, Charles H. & Starks, E. C.', 1],
    ['Girard, Charles Frédéric', 1],
    ['Hubbs, Carl L. & Schultz, Leonard P.', 1],
    ['Jordan, David Starr & Gilbert, Charles H.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 6],
    ['Walker, H. J. & Rosenblatt, Richard H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);