function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Exbodi, Françoise Monniot', 1],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 1],
    ['Herdman, William Abbott', 7],
    ['Kott, Patricia', 1],
    ['Maggioni, Tamara & Rimondino, Clara & Taverna, Anabela', 3],
    ['Monniot, Francoise', 5],
    ['Monniot, Françoise & López-Legentil, Susanna', 1],
    ['Monniot, Françoise & Monniot, Claude', 2],
    ['Sanamyan, K. E. & Sanamyan, N. P.', 9],
    ['Sanamyan, Karen & Sanamyan, Nadya & Kuhnz, Linda', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);