function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alfred L. Gardner', 4],
    ['Beck, Robin M. D. & Voss, Robert S. & Jansa, Sharon A.', 2],
    ['Guglielmone, Alberto A. & Nava, Santiago & Díaz, Mónica', 1],
    ['Ladevèze, Sandrine', 1],
    ['MacPhee, Ross D. E. & Gaillard, Charlène & Forasiepi, Analía M.', 1],
    ['Suarez, Catalina & Forasiepi, Analia M. & Babot, María Judith', 1],
    ['Thomas, Oldfield', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);