function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguirre-Santoro, Julián & Hernández-A, Érika', 1],
    ['Echeverría, María L. & Alonso, Sara I. & Comparatore, Viviana M.', 1],
    ['Gouda, Eric J.', 1],
    ['Hernández-Cárdenas, Rodrigo & González-Rocha, Edith', 1],
    ['Hernández-Cárdenas, Rodrigo Alejandro & Espejo-Serna, Adolfo', 1],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Jarvis, Charlie', 11],
    ['Kessous, Igor M. & Costa, Andrea F.', 4],
    ['Linnaeus, Carolus', 4],
    ['Paixão-Souza, Bruno & Silva, Nílber Gonçalves Da', 1],
    ['Pinzón, Juan P. & Ramírez, Ivón M. & Carnevali, Germán', 1],
    ['Sabino, Gabriel Pavan & Leodegario, Marcio De Melo', 1],
    ['Souza, Everton Hilo De & Cavalcante, Brayan P.', 2],
    ['Souza, Everton Hilo De & Leodegario, Marcio De Melo', 1],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);