function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Campos-Filho, I. S. & Contreira, S. G. & Lopes-Leitzke, E. R.', 1],
    ['Campos-Filho, I. S. & Lisboa, J. T. & Araujo, Paula Beatriz', 2],
    ['Campos-Filho, Ivanklin Soares & Correia, Iluliane Maria Gadelha', 1],
    ['Campos-Filho, Ivanklin Soares & Fernandes, Camile Sorbo', 2],
    ['Zimmermann, Bianca L. & Campos-Filho, Ivanklin S.', 2],
    ['Zimmermann, Bianca Laís & Campos-Filho, I. S. & Deprá, Maríndia', 3],
    ['Zimmermann, Bianca Laís & Campos-Filho, Ivanklin Soares', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);