function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['An, Yuan-Yan & Zeng, Xiang-Yu & Geng, Kun & Hyde, Kevin David', 2],
    ['Bakhshi, Mounes & Arzanlou, Mahdi & Babai-Ahari, Asadollah', 6],
    ['Bezděk, Jan', 1],
    ['Chen, Jingwen & Manawasinghe, Ishara S. & Lin, Jieying', 1],
    ['Chun-Sheng, Long & You-Peng, Wu & Xu, Zhang & Yan, Lin', 1],
    ['García-Prieto, Luis & Falcón-Ordaz, Jorge', 3],
    ['Joshi, Yogesh & Bansal, Pooja & Yadav, Arjun Lal', 1],
    ['Meswaet, Yalemwork & Mangelsdorff, Ralph & Yorou, Nourou S.', 18],
    ['Phon, Chooi-Khim & Kirton, Laurence G. & Kuah, Meng-Kiat', 6],
    ['Russell A. Mittermeier & Don E. Wilson', 4],
    ['Singh, Archana & Singh, Paras Nath & Dubey, Nawal Kishore', 1],
    ['Vidal, Jacques & Kirkendale, Lisa', 3],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 6],
    ['Yadav, Sanjay & Verma, Sanjeet Kumar & Singh, Vinay Kumar', 1],
    ['Yang, Jun-Xian & Zhang, Huang & Wang, Lin & Zhu, Rong', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=56)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);