function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boulenger, George Albert', 11],
    ['David, L. & Poll, M.', 1],
    ['Denton, Melanie L. J. Stiassny John S. S.', 1],
    ['Dunz, Andreas R. & Schliewen, Ulrich K.', 2],
    ['Fowler, Henry Weed', 4],
    ['Giltay, L.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Moelants, Tuur & Zebe, Victorine Mbadu & Snoeks, Jos', 3],
    ['Myers, G. S.', 2],
    ['Nichols, J. T. & Griscom, L.', 2],
    ['Pellegrin, J.', 11],
    ['Peters, Wilhelm Carl Hartwig', 2],
    ['Poll, M.', 7],
    ['Poll, M. & Gosse, J. - P.', 2],
    ['Schmidt, Ray C. & Knobloch, Elise C. & Barrientos, Christian', 2],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=68)',
    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);