function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bahls, Loren', 5],
    ['Levkov, Zlatko & Williams, David M.', 1],
    ['Rioual, Patrick & Gao, Qiang & Peng, Yumei & Chu, Guoqiang', 1],
    ['Vouilloud, A. A. & Guerrero, J. M. & Palladino, M. B.', 4],
    ['Wadmare, Neha & Karthick, Balasubramanian', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);