function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abadjiev, Stanislav & Langourov, Mario', 1],
    ['Aistleitner, E.', 6],
    ['Aistleitner, Eyjolf', 8],
    ['Blanchard, Émile', 1],
    ['Boisduval, J. - A.', 1],
    ['Boisduval, Jean Baptiste Alphonse Dechauffour de', 2],
    ['Bonelli, Simona & Barbero, Francesca & Casacci, Luca Pietro', 6],
    ['Churkin, Sergei V. & Kolesnichenko, Kirill K.', 1],
    ['Della Rocca, Francesca & Stefanelli, Silvia & Cardarelli, Elisa', 2],
    ['Franeta, Filip', 2],
    ['Freyer, Christian Friedrich', 1],
    ['Khudhur, Farhad A.', 5],
    ['Korb, Stanislav K.', 3],
    ['Lamas, Gerardo', 6],
    ['Zahiri, Reza & Nazari, Vazrick & Rajaei, Hossein', 13],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);