function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Deng, Zhongwei & Agnarsson, Ingi & Chen, Zhanqi & Liu, Jie', 8],
    ['Kulkarni, Siddharth & Vartak, Atul & Deshpande, Vishwas', 4],
    ['Lin, Yejie & Marusik, Yuri M. & Gao, Caixia & Xu, Hao', 4],
    ['Murthappa, Prashanthakumara S. & Malamel, Jobi J.', 3],
    ['Tang, Jiaxin & Liang, Wei & Shi, Haitao & Gao, Caixia', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);