function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Handal, Adil Y. & Torstensson, Anders & Wulff, Angela', 1],
    ['Jia, Aoli & Chen, Baoyue & Lu, Hongyan & Xing, Yu & Li, Bin', 7],
    ['Jiang, Ning & Yang, Qin & Fan, Xin-Lei & Tian, Cheng-Ming', 6],
    ['Norphanphoun, Chada & Raspe, Olivier & Jeewon, Rajesh', 3],
    ['Pan, Meng & Zhu, Hai-Yan & Tian, Cheng-Ming', 1],
    ['Schlüsslmayr, Gerhard', 1],
    ['Tian, Long yan & Xu, Jin zhu & Zhao, Dan yang & Qiu, Hua long', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Zhu, Haiyan & Pan, Meng & Bezerra, Jadson D. P.', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);