function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Berg, C.', 1],
    ['Collins, Rupert A. & Duarte Ribeiro, Emanuell', 2],
    ['Eigenmann, C. H.', 4],
    ['Eigenmann, C. H. & Eigenmann, Rosa Smith', 3],
    ['Fowler, Henry Weed', 6],
    ['Kner, R.', 2],
    ['Linnaeus, Carolus', 2],
    ['Meek, S. E. & Hildebrand, S. F.', 2],
    ['Miranda-Ribeiro, A. de', 2],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 3],
    ['Raphael Covain & Sonia Fisch-Muller', 2],
    ['Regan, C. T.', 2],
    ['Steindachner, F.', 5],
    ['Thomas, Matthew R. & Rapp Py-Daniel, Lúcia H.', 3],
    ['W. Peters', 2],
    ['Other (17)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    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);