function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre O. & Boehs, Guisla', 1],
    ['Almeida, Alexandre Oliveira De & Guerrazzi, Maria Cec Lia', 2],
    ['Ashelby, Christopher W. & Lin, Wei-Cheng & Grave, Sammy De', 1],
    ['Bruce, A. J.', 1],
    ['Cardoso, Irene', 2],
    ['Ferreira, Rodrigo Simões & Vieira, Rony Roberto Ramos', 3],
    ['Filho, Petrônio Alves Coelho', 1],
    ['Fransen, Charles H. J. M.', 2],
    ['Herrera-Barquín, Hiram & Leija-Tristán, Antonio', 1],
    ['João Alberto Farinelli Pantaleão & Mariana Terossi', 1],
    ['Li, Xinzheng & Bruce, Alexander J.', 1],
    ['Li, Xinzheng & Cleva, Régis & Poupin, Joseph', 1],
    ['Mantelatto, Fernando L. & Al, Et', 1],
    ['Soledade, Guidomar O. & Fonseca, Mytalle S.', 1],
    ['Vieira, Inacia Maria & Silva, Luiz Maurício Abdon', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);