function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De Oliveira, José C. & Oyakawa, Osvaldo T.', 1],
    ['De Oliveira, Rianne C. & Ota, Renata R. & Deprá, Gabriel C.', 1],
    ['Fernando C. Jerep & Oscar A. Shibatta & Edson H. L. Pereira', 1],
    ['Lopes Pereira, Edson H.', 1],
    ['Pereira, Edson H. L. & A., Pablo Lehmann & Reis, Roberto E.', 1],
    ['Pereira, Edson H. L. & Lehmann, Pablo & Schvambach, Lucas J.', 1],
    ['Pereira, Edson H. L. & Pessali, Tiago C. & Andrade, Francisco de', 1],
    ['Pereira, Edson H. L. & Pessali, Tiago Casarim & Reis, Roberto E.', 1],
    ['Pereira, Edson H. L. & Reis, Roberto E.', 1],
    ['Pereira, Edson H. L. & Vieira, Fábio & Reis, Roberto E.', 3],
    ['dos Santos, Sergio Alexandre & de Britto, Marcelo Ribeiro', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);