function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aistleitner, Eyjolf', 4],
    ['Blake, James A.', 118],
    ['Dean, Harlan K. & Blake, James A.', 7],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 28],
    ['Gunton, Laetitia M. & Kupriyanova, Elena K. & Alvestad, Tom', 10],
    ['Harzhauser, Mathias & Guzhov, Aleksandr & Landau, Bernard', 6],
    ['Leão, Luciana Sanches Dourado & Santos, Cinthya Simone Gomes', 6],
    ['Mikac, Barbara', 7],
    ['Núñez, Jorge & Martínez, Alejandro', 5],
    ['Pont, Adrian C.', 11],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 5],
    ['Wiklund, Helena & Rabone, Muriel & Glover, Adrian G', 8],
    ['Zhadan, Anna', 37],
    ['Zhadan, Anna & Stupnikova, Alexandra & Neretina, Tatiana', 7],
    ['Álvarez, Ricardo & Budaeva, Nataliya', 4],
    ['Other (21)', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=297)',
    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);