function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calabon, Mark S. & Jones, E. B. Gareth & Pang, Ka-Lai', 1],
    ['Chen, Yi-Yang & Lin, Hsiu-Chin & Chan, Benny K. K.', 2],
    ['Gao, Ying & Monkai, Jutamart & Gentekaki, Eleni', 1],
    ['Joshi, Yogesh & Bansal, Pooja & Yadav, Arjun Lal', 1],
    ['Lee, Yen-Chen & Lue, Kuang-Yang & Wu, Wen-Lung', 2],
    ['Wang, Cheng-Bin & Jiang, Ning & Tu, Yan & Zhu, Ya-Quan', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);