function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, M. S. & Moraes, P. S. S. & Nascimento, M. H. S.', 1],
    ['Benitez, Mauricio Fabián & Aichino, Danilo Ramón', 1],
    ['Ceríaco, Luis M. P. & Santos, Bruna S. & Semedo, Thiago B. F.', 1],
    ['Diniz, Paulo Baltazar & Siqueira, Hatus de Oliveira', 1],
    ['Koerber, Stefan & Litz, Thomas O. & Mirande, Juan Marcos', 4],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 4],
    ['dos Santos, Sergio Alexandre & de Britto, Marcelo Ribeiro', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);