function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borkent, Art', 2],
    ['Borkent, Art & Dominiak, Patrycja & Díaz, Florentina', 1],
    ['Ronderos, María M. & Marino, Pablo I. & Díaz, Florentina', 1],
    ['Spinelli, Gustavo & Wolff, Marta', 6],
    ['Torreias, S. R. S. & Ferreira-Keppler, R. L. & Ronderos, M. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);