function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brooks, Daniel R.', 1],
    ['Kohn, Anna & Fernandes, Berenice M. M. & Gibson, David Ian', 1],
    ['Lopes, Daniela A. & Mainenti, Adriana & Knoff, Marcelo', 1],
    ['Margarita Ostrowski de Núñez & Nathalia J. Arredondo', 2],
    ['Teixeira de Freitas, J. F.', 1],
    ['Thatcher, Vernon E.', 1],
    ['Travassos, L. & Teixeira de Freitas, J. F. & Bührnheim, P. F.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    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);