function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carvalho, A. L. de', 1],
    ['Costa, Wilson J. E. M.', 8],
    ['Costa, Wilson J. E. M. & Barrera, S. & Sarmiento, J.', 1],
    ['Costa, Wilson J. E. M. & Brasil, Gilberto C.', 2],
    ['Costa, Wilson J. E. M. & Brasil, Gilberto Campello', 1],
    ['Costa, Wilson J. E. M. & Cyrino, A. L. F. & Nielsen, D. T. B.', 1],
    ['Costa, Wilson J. E. M. & Hellner, S.', 1],
    ['Costa, Wilson J. E. M. & Nielsen, D. T. B.', 2],
    ['Costa, Wilson J. E. M. & Nielsen, D. T. B. & de Luca, A. C.', 1],
    ['Nielsen, Dalton Tavares Bressane & Pessali, Tiago Casarim', 1],
    ['Nielsen, Dalton Tavares Bressane & Shibatta, Oscar Akio', 1],
    ['Wilson J. E. M. Costa', 70],
    ['Wilson J. E. M. Costa & Gilberto C. Brasil', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=98)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);