function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akhtar, Mir Samim & Ahmad, Zubair', 2],
    ['Gupta, Ankita & Churi, Paresh V. & Sengupta, Ashok', 5],
    ['Gupta, Ankita & Pereira, Blaise & Churi, Paresh V.', 3],
    ['Madl, M. & Achterberg, C. Van', 2],
    ['Rousse, Pascal & Gupta, Ankita', 3],
    ['Valerio, A. A. & Whitfield, J. B. & Janzen, D. H.', 20],
    ['Valerio, A. A. & Whitfield, J. B. & Kole, M.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);