function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bolfarini, Marcio P. & Bichuette, Maria Elina', 2],
    ['Carvalho, Pedro Henrique Mendes & Castro-Souza, Rodrigo Antônio', 3],
    ['Carvalho, Pedro Henrique Mendes & Junta, Vitor Gabriel Pereira', 5],
    ['Castro-Souza, Rodrigo Antônio & Junta, Vitor Gabriel Pereira', 1],
    ['Castro-Souza, Rodrigo Antônio & Zefa, Edison', 3],
    ['Ferreira, Rodrigo Lopes', 2],
    ['Souza-Dias, Pedro G. B. & Bolfarini, Márcio P.', 1],
    ['Souza-Dias, Pedro G. B. & Szinwelski, Neucir & Fianco, Marcos', 2],
    ['Zefa, Edison & Martins, Luciano De Pinho', 9],
    ['Zefa, Edison & Redü, Darlan Rutz', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);