function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Candèze, Ernest', 1],
    ['Conte, John L. Le', 1],
    ['Eschscholtz, Johann Friedrich von', 1],
    ['Ghahari, Hassan & Packova, Gabriela & Platia, Giuseppe', 1],
    ['Hoffmannova, Johana & Packova, Gabriela', 7],
    ['Le Guillou, E. J. F. Docteur', 1],
    ['Ruzzier, Enrico & Morin, Lucio & Zugno, Matteo & Tapparo, Andrea', 1],
    ['Sharp, David', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    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);