function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arias, Erick & Kubicki, Brian', 1],
    ['Boza-Oviedo, Eduardo & Rovito, Sean M. & Chaves, Gerardo', 1],
    ['Kubicki, Brian & Reyes, Aura & Arias, Erick', 14],
    ['Townsend, Josiah H.', 3],
    ['Townsend, Josiah H. & Butler, Michael & Wilson, Larry David', 1],
    ['Townsend, Josiah H. & Medina-Flores, Melissa', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);