function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carrenho, Renan & Rodrigues, Higor D. D.', 1],
    ['Drake, Carl J.', 2],
    ['Guidoti, Marcus', 1],
    ['Guilbert, Éric & Montemayor, Sara I.', 3],
    ['María C. Melo & Gimena Dellapé & Leonela Olivera', 2],
    ['Melo, Maria Cecilia & Dellape, Pablo Matias', 1],
    ['Monte, Oscar', 1],
    ['Montemayor, Sara & Coscarón, María Del Carmen', 15],
    ['Montemayor, Sara I. & Dellapé, Pablo M.', 2],
    ['Powell, Erin C. & Halbert, Susan E. & Deeter, Lily', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);