function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Datta, Tridip Kumar & Rajmohana, Keloth', 2],
    ['Fedyaeva, Maria A. & Neretina, Tatjana V. & Konovalova, Olga P.', 4],
    ['Hendricks, Martin G. J. & Gibbons, Mark J.', 4],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 3],
    ['Leduc, Daniel & Zhao, Zeng', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);