function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertaco, Vinicius A. & Azevedo, Marco A.', 1],
    ['Buckup, P. A.', 1],
    ['Calegari, Bárbara B. & Reis, Roberto E.', 1],
    ['Ihering, R. von', 1],
    ['Langeani, Francisco', 5],
    ['Martins, Fernanda O.', 1],
    ['Martins, Fernanda O. & Calegari, Bárbara B.', 1],
    ['Martins, Fernanda O. & Cherobim, Arieli M. & Andrade, Breno N.', 1],
    ['Martins, Fernanda O. & Rosa, Alaina C. & Langeani, Francisco', 1],
    ['Martins, Fernanda de Oliveira & Langeani, Francisco', 1],
    ['Miranda-Ribeiro, A. de', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);