function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida-Silva, Diego & Silva-Soares, Thiago', 1],
    ['Condez, Thais Helena & Monteiro, Juliane Petry De Carli', 1],
    ['Folly, Manuella & Amaral, Lucas Coutinho', 1],
    ['Folly, Manuella & Condez, Thais H. & Vrcibradic, Davor', 1],
    ['Guimarães, Carla Silva & Luz, Sofia & Rocha, Pedro Carvalho', 1],
    ['Mangia, Sarah & Santana, Diego Jose', 1],
    ['Monteiro, Juliane Petry De Carli & Condez, Thais Helena', 1],
    ['Napoli, Marcelo Felgueiras & Caramaschi, Ulisses', 1],
    ['PIE, Marcio R. & Ribeiro, Luiz Fernando', 1],
    ['PIE, Marcio R. & Ribeiro, Luiz Fernando & Confetti, André A.', 1],
    ['Pombal Jr., José P. & Izecksohn, Eugenio', 1],
    ['Ribeiro, Luiz Fernando & Blackburn, David C.', 2],
    ['Ribeiro, Luiz Fernando & Bornschein, Marcos R.', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);