function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Avelino-Capistrano, Fernanda & Nessimian, Jorge Luiz', 4],
    ['Duarte, Tácio & Lecci, Lucas S. & Calor, Adolfo R.', 5],
    ['Gonçalves, Maísa De Carvalho & Novaes, Marcos Carneiro', 6],
    ['Lecci, Lucas Silveira & Froehlich, Claudio Gilberto', 20],
    ['Novaes, Marcos Carneiro & Bispo, Pitágoras Da Conceição', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);