function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bizerril, Carlos Roberto S. F.', 1],
    ['Edson H. L. Pereira & Roberto E. Reis & Pablo F. M. Souza', 2],
    ['Fernando C. Jerep & Oscar A. Shibatta & Edson H. L. Pereira', 2],
    ['Giltay, L.', 1],
    ['Miranda-Ribeiro, P. de', 1],
    ['Pereira, Edson H. L. & Reis, Roberto E.', 3],
    ['Reis, Roberto E. & Pereira, Edson H. L.', 9],
    ['de Brito, Victor & Buckup, Paulo Andreas', 2],
    ['de Oliveira, J. Chacon & Oyakawa, Osvaldo T.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);