function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre O. & Anker, Arthur & Mantelatto, Fernando L.', 1],
    ['Ayón-Parente, Manuel & Hendrickx, Michel E.', 1],
    ['Bruce, A. J.', 1],
    ['Costa, Oronzio Gabriele', 1],
    ['Filho, Petrônio Alves Coelho', 2],
    ['Fransen, Charles H. J. M.', 2],
    ['Li, Xinzheng & Cleva, Régis & Poupin, Joseph', 1],
    ['Mantelatto, Fernando L. & Al, Et', 2],
    ['Moraes, Isabela R. R. & Bergamasco, Giovanna R.', 1],
    ['Neves, Keider', 1],
    ['PACHELLE, PAULO P. G. & ANKER, ARTHUR & TAVARES, MARCOS', 2],
    ['Pachelle, Paulo P. G. & Anker, Arthur & Mendes, Cecili B.', 1],
    ['Soledade, Guidomar O. & Fonseca, Mytalle S.', 1],
    ['Vieira, Rony R. R. & Ferreira, Rodrigo S. & D’Incao, Fernando', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);