function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Epler, J. H. & Gimmel, Matthew L.', 5],
    ['Jorge, Gabrielle & Libonatti, María Laura & Benetti, Cesar João', 1],
    ['Libonatti, María L. & Jorge, Gabrielle & Archangelsky, Miguel', 1],
    ['Libonatti, María Laura', 14],
    ['Libonatti, María Laura & Nardi, Gianluca', 1],
    ['Pic, Maurice', 7],
    ['Ruta, Rafał', 1],
    ['Watts, Chris H. S. & Cooper, Steven J. B. & Saint, Kathleen M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    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);