function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barros, Rafael C. & Fonseca, Mailson G. & Jardim, Marcelo T.', 1],
    ['Botero, Marcela L. Monné Miguel A. Monné Juan P.', 1],
    ['Durán, José Rafael Esteban & Martins, Ubirajara R.', 1],
    ['Ferreira, Gabriel Dos Santos & Ferreira, André Da Silva', 1],
    ['García, Kimberly & Botero, Juan Pablo & Santos-Silva, Antonio', 2],
    ['Monné, Miguel A. & Monné, Marcela L.', 1],
    ['Nascimento, Francisco Eriberto de Lima & Botero, Juan Pablo', 3],
    ['Souza, Diego De Santana & Andriolo, Aline', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);