function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aini, Arifah Nur & Mongkolsamrit, Suchada & Wijanarka, Wijanarka', 3],
    ['Chen, Wan-Hao & Liang, Jian-Dong & Ren, Xiu-Xiu & Zhao, Jie-Hong', 3],
    ['Wang, Yao & Wang, Zhi-Qin & Luo, Run & Souvanhnachit, Sisommay', 5],
    ['Wang, Yong-Hui & Wang, Wen-Jing & Wang, Ke & Dong, Cai-Hong', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Zha, Ling-Sheng & Kryukov, Vadim Yu & Ding, Jian-Hua', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);