function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ayala, Mahia M. & Spinelli, Gustavo R. & Funes, Amparo', 1],
    ['Borkent, Art', 1],
    ['Felippe-Bauer, Maria Luiza & Spinelli, Gustavo R.', 6],
    ['Spinelli, Gustavo & Wolff, Marta', 3],
    ['William L. Grogan, Jr. & Hribar, Lawrence J.', 1],
    ['William L. Grogan, Jr. & Spinelli & Ronderos, María M. & Carla', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);