function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 1],
    ['Darbyshire, Iain & Burrows, John E. & Luke, Quentin', 1],
    ['Fernández-Alonso, Jose Luis & Melo, José Iranildo Miranda De', 1],
    ['Feuillet, Christian', 6],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 1],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 18],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 4],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    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);