function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chaiwan, Napalai & Tibpromma, Saowaluck', 1],
    ['Liu, Jia-Wei & Manawasinghe, Ishara S. & Liao, Xuan-Ni', 6],
    ['Ma, Xiaoya & Nontachaiyapoom, Sureeporn', 11],
    ['Mehmood, Nasir & Yuan, Yuan & Ali, Mohammed & Ali, Muhammad', 1],
    ['Mu, Taichang & Zhang, Zhaoxue & Liu, Rongyu & Liu, Shubin', 3],
    ['Tibpromma, Saowaluck & Hyde, Kevin D. & Bhat, Jayarama D.', 2],
    ['Vieira, Willie Anderson Dos Santos', 1],
    ['Wang, Cheng-Bin & Jiang, Ning & Xue, Han & Piao, Chun-Gen', 2],
    ['Wei, Xin & Yang, Shu Qi & Jiang, Zhi Gang & Cui, Meng Jiao', 1],
    ['Yang, Erfu & Tibpromma, Saowaluck & Dai, Dongqin', 2],
    ['Zhang, Lin & Yin, Yue-Qi & Zhao, Li-Li & Xie, Yu-Qing', 2],
    ['Zhou, Sixuan & Qiao, Lijun & Jayawardena, Ruvishika S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);