function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertaco, Vinicius A. & Azevedo, Marco A.', 1],
    ['Boulenger, George Albert', 1],
    ['Cardoso, Alexandre R.', 1],
    ['Carvalho, T. P. & Reis, Roberto E. & Sabaj, Mark H.', 1],
    ['Carvalho, Tiago P. & Cardoso, Alexandre R. & Friel, John P.', 2],
    ['Carvalho, Tiago P. & Reis, Roberto E. & Friel, John P.', 1],
    ['Cope, Edward Drinker', 2],
    ['Dagosta, Fernando Cesar Paiva & Pinna, Mário de', 1],
    ['Eigenmann, C. H.', 3],
    ['Eigenmann, C. H. & Allen, W. R.', 3],
    ['Esguícero, André L. H. & Castro, Ricardo M. C.', 2],
    ['Fernández-Yépez, A.', 2],
    ['Friel, John P.', 3],
    ['Orcés V., G.', 2],
    ['Schultz, Leonard P.', 2],
    ['Other (22)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);