function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calor, Adolfo R. & Holzenthal, Ralph W. & Froehlich, Claudio G.', 14],
    ['Dias, Everton S. & Quinteiro, Fabio B. & Calor, Adolfo R.', 1],
    ['Neto, Pedro Bonfá & Vilarino, Albane & Salles, Frederico F.', 1],
    ['Paprocki, Henrique & Franca, Diogo', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);