function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calabon, Mark S. & Jones, E. B. Gareth & Pang, Ka-Lai', 1],
    ['Cotton, Adam M. & Doleck, Tenzing & Zhang, Xin', 5],
    ['Sidat, Azaz & Bhatt, Urjit', 2],
    ['Syaukani, S. & Lisa, O. & Zumaidar, Z. & Fitri, L.', 1],
    ['Tian, Xingguo & Tibpromma, Saowaluck & Karunarathna, Samantha C.', 2],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 3],
    ['Yasanthika, Erandi & Wanasinghe, Dhanushka N. & Ren, Guang-Cong', 1],
    ['Zhao, Wen-Yu & Yi, Jing & Chang, Yi-Bo & Sun, Cheng-Peng', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);