function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akhtar, Mir Samim & Dey, Debjani & Usmani, Mohd. Kamil', 2],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 6],
    ['Davidian, Elena M. & Belokobylskij, Sergey A.', 3],
    ['Kaliuzhna, M. O.', 1],
    ['Rakhshani, Ehsan & Barahoei, Hossein & Ahmad, Zubair', 1],
    ['Tian, Hong-Wei & Achterberg, Cornelis van & Chen, Xue-Xin', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);