function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brescovit 1, Antonio Domingos & Zampaulo 2, Robson de Almeida', 4],
    ['Brescovit, Antonio D. & Cizauskas, Igor & Mota, Leandro P.', 8],
    ['Brescovit, Antonio D. & Zampaulo, Robson de A. & Cizauskas, Igor', 2],
    ['Castanheira, Pedro De Souza & Pérez-González, Abel', 3],
    ['Dupérré, Nadine', 10],
    ['Valdez-Mondragón, Alejandro & Chamé-Vázquez, David', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);