function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 1],
    ['Gilbert, Charles H.', 1],
    ['Gilbert, Charles H. & Hubbs, Carl L.', 2],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Iwamoto, Tomio & Arai, T.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Melo, Marcelo R. S. & Braga, Adriana C. & Nunan, Gustavo W. A.', 3],
    ['Nakayama, Naohide', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);