function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alcock, Alfred William', 1],
    ['Bariche, Michel & Fricke, Ronald', 2],
    ['Basilewsky, S.', 1],
    ['Bennett, Edward Turner', 2],
    ['Bleeker, Pieter', 4],
    ['Bonaparte, Charles Lucien', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Chabanaud, P.', 3],
    ['Fowler, Henry Weed', 3],
    ['Gilchrist, J. D. F.', 1],
    ['Golani, Daniel & Bogorodsky, Sergey V.', 2],
    ['Ramsay, E. P.', 2],
    ['Richardson, John', 2],
    ['Steindachner, F.', 4],
    ['von Bonde, C.', 2],
    ['Other (18)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);