function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Citeli, Nathalie & Hamdan, Breno & Guedes, Thais', 2],
    ['Conrad, J. L.', 1],
    ['Cruz-Rodríguez, Cristian & Lynch, John D. & Cárdenas, Julieth S.', 2],
    ['Entiauspe-Neto, Omar M. & Franco, Francisco L. & Koch, Claudia', 2],
    ['Freire, Eliza Maria Xavier & Caramaschi, Ulisses', 1],
    ['Guedes, Thaís B. & Nogueira, Cristiano & Marques, Otavio A. V.', 1],
    ['Marra Santos, Fidelis Junio', 3],
    ['Mccranie, James R.', 1],
    ['Nogueira, Cristiano C. & Argôlo, Antonio J. S.', 9],
    ['Santos, Fidélis & Reis, Roberto E.', 2],
    ['Szyndlar, Zbigniew & Georgalis, Georgios L.', 1],
    ['Waltrick, Camilla Spengler & Giasson, Luís Olímpio Menta', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);