function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, Jean Louis Rodolphe', 2],
    ['Alexander, Timothy & Seehausen, Ole', 1],
    ['Baycelebi, Esra', 2],
    ['Bogutskaya, Nina G.', 1],
    ['Coelho, M. M. & Mesquita, N. & Collares-Pereira, M. J.', 1],
    ['Collares-Pereira, M. J.', 1],
    ['Doadrio, Ignacio & Carmona, J. A.', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 4],
    ['Gante, Hugo F. & Santos, Carlos D. & Alves, Maria Judite', 1],
    ['Hugo F. Gante & Carlos D. Santos & Maria Judite Alves', 7],
    ['La Blanchère, H. de', 2],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 3],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 2],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 4],
    ['Sykes, W. H.', 5],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    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);