function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arroyo, Sandy B.', 1],
    ['Barrio-Amorós, César L. & Molina, César R.', 2],
    ['Burrowes, Patricia A. & Hernández-Figueroa, Ábner D.', 1],
    ['Caramaschi, Ulisses & Canedo, Clarissa', 1],
    ['Cruz-Rodríguez, Cristian & Lynch, John D. & Cárdenas, Julieth S.', 1],
    ['Duellman, William E. & Lehr, Edgar & Venegas, Pablo J.', 2],
    ['Díaz, Luis M. & Cádiz, Antonio & Navarro, Nils', 1],
    ['Díaz, Luis M. & Hedges, Blair & Schmid, Michael', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 2],
    ['García, Juan Carlos & Lynch, John D.', 1],
    ['Grünwald, Christoph I. & Reyes-Velasco, Jacobo', 6],
    ['Miracle, Eulàlia Gassó & Van, Lars W. & Ostende, Den Hoek', 5],
    ['Mueses-Cisneros, Jonh Jairo', 3],
    ['Myers, C. W. & Donnelly, M. A.', 2],
    ['Reyes-Velasco, Jacobo & Ahumada-Carrillo, Ivan', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);