function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alvarez, J. & Gutierrez, T.', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 3],
    ['Bleeker, Pieter', 1],
    ['Bussing, William A.', 1],
    ['Carr, A. F. & Giovannoli, L.', 1],
    ['Fowler, Henry Weed', 4],
    ['Gill, T. N.', 1],
    ['Hubbs, Carl L.', 4],
    ['Inger, R. F.', 2],
    ['Kullander, Sven O.', 7],
    ['Meek, S. E.', 8],
    ['Mooi, Randall D.', 2],
    ['Mooi, Randall D. & Randall, John Ernest Dr.', 2],
    ['Pellegrin, J.', 2],
    ['Rüppell, Wilhem Peter Eduard Simon', 2],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    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);