function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aristizábal-García, Hernán & Floriano, Carla Fernanda Burguez', 2],
    ['Carrenho, Renan & Rodrigues, Higor D. D.', 1],
    ['Cordeiro, Isabelle R S & Moreira, Felipe F F', 2],
    ['Dias-Silva, Karina & Moreira, Felipe Ferraz Figueiredo', 3],
    ['Moreira, Felipe Ferraz Figueiredo & Barbosa, Julianna Freires', 4],
    ['Moreira, Felipe Ferraz Figueiredo & Rodrigues, Higor D. D.', 2],
    ['Rodrigues, Juliana Mourão Dos Santos', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);