function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 1],
    ['Ekins, Merrick & Erpenbeck, Dirk & Debitus, Cécile', 17],
    ['Keller, C.', 1],
    ['Manconi, Renata & Cadeddu, Barbara & Ledda, Fabio', 5],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 2],
    ['Sandes, Joana & Muricy, Guilherme & Pinheiro, Ulisses', 6],
    ['Sandes, Joana & Pinheiro, Ulisses', 2],
    ['Schmidt, Eduard Oscar', 1],
    ['Sim, Chung Ja & Lee, Kyung Jin & Kim, Young A', 2],
    ['Sim-Smith, Carina & Hickman, Cleveland & Kelly, Michelle', 2],
    ['Topsent, Émile', 2],
    ['Uriz, María - Jesús & Cebrian, Emma', 3],
    ['Van Soest, Rob W. M.', 4],
    ['Wahab, Muhammad Azmi Abdul & Wilson, Nerida G. & Prada, Diana', 20],
    ['de, Steve & Bergquist, Patricia R.', 3],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    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);