function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Goonasekara, Ishani D. & Jayawardena, Ruvishika S.', 1],
    ['Hsu, Sheng-Yu & Xu, Yuan-Cheng & Lin, Yu-Chen & Chuang, Wei-Yu', 8],
    ['Song, Jia-Yu & Wu, Hai-Xia & Li, Jin-Chen & Ding, Wei-Feng', 3],
    ['Tibpromma, Saowaluck & Hyde, Kevin D. & Bhat, Jayarama D.', 1],
    ['Wang, Yifeng & Tsui, Kin-Ming & Chen, Shimei & You, Chongjuan', 2],
    ['Zhang, Zhaoxue & Liu, Rongyu & Liu, Shubin & Mu, Taichang', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);