function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Don E. Wilson & Russell A. Mittermeier', 17],
    ['Gregorin, Renato & Moras, Ligiane M. & Acosta, Luis Hernán', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 9],
    ['Karl F. Koopman', 9],
    ['Medina, César E. & Gregorin, Renato & Zeballos, Horacio', 1],
    ['Rodríguez-San Pedro, Annia & Pacheco, Jaime A.', 2],
    ['Simmons, Nancy B. & Voss, Robert S.', 2],
    ['Vannatta, Jessica M & Gore, Jeffery A & Mathis, Verity L', 1],
    ['Velazco, Paúl M. & Voss, Robert S. & Fleck, David W.', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);