function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Bousquet, Yves', 17],
    ['Ferro, Michael L. & Gimmel, Matthew L. & Harms, Kyle E.', 2],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Van Vondel, Bernhard J. & Ostovan, Hadi & Ghahari, Hassan', 1],
    ['Wang, Cheng-Bin & Ruzicka, Jan & Liu, Bin', 3],
    ['Zaragoza-Caballero, Santiago & Rodríguez-Mirón, Geovanni M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);