function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acosta-Galvis, Andres R. & Torres, Mauricio', 1],
    ['Camper, Jeffrey D. & Torres-Carvajal, Omar & Ron, Santiago R.', 1],
    ['Fernández-Roldán, Juan David & Lynch, John D.', 2],
    ['Linnaeus, Carolus', 3],
    ['Maciel, Adriano O. & Hoogmoed, Marinus S.', 4],
    ['Miracle, Eulàlia Gassó & Van, Lars W. & Ostende, Den Hoek', 2],
    ['Restrepo, Adriana & Molina-Zuluaga, Claudia & Hurtado, Juan P.', 1],
    ['Vanzolini, Paulo E. & Myers, Charles W.', 1],
    ['Wilkinson, Mark & Mauro, Diego San & Sherratt, Emma', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);