function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dissanayake, Lakmali S. & Kang, Ji-Chuan', 1],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Geng, Kun & Zhang, Bin & Song, Yu & Hyde, Kevin D.', 1],
    ['Goonasekara, Ishani D. & Jayawardena, Ruvishika S.', 2],
    ['Hu, Hong Min & Liu, Li Li & Zhang, Xu & Lin, Yan', 1],
    ['Jiang, Hong-Bo & Zhang, Shi-Jie & Phookamsak, Rungtiwa', 1],
    ['Li, Qi Rui & Zhang, Xu & Lin, Yan & Samarakoon, Milan C.', 5],
    ['Lu, Xiang & Mai, Mengxian & Tan, Wenhui & Zhang, Muyan', 1],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Song, Yu & Geng, Kun & Zhang, Bin & Hyde, Kevin D.', 2],
    ['Tang, De-Xiang & Zou, Wei-Qiu & Wang, Yao-Ming & Huang, Ou', 1],
    ['Tibpromma, Saowaluck & Hyde, Kevin D. & Bhat, Jayarama D.', 2],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Wijayawardene, Nalin N. & Dissanayake, Lakmali S. & Li, Qi-Rui', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);