function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bilanski, Piotr & Jankowiak, Robert & Solheim, Halvor', 3],
    ['Chang, Runlei & Duong, Tuan A. & Taerum, Stephen J.', 5],
    ['Chang, Runlei & Zhang, Xiuyu & Si, Hongli & Zhao, Guoyan', 5],
    ['Min Wang, Hui & Wang, Zheng & Liu, Fu & Xu Wu, Cheng', 7],
    ['Ostafinska, Agnieszka & Jankowiak, Robert & Bilanski, Piotr', 6],
    ['Strzalka, Beata & Jankowiak, Robert & Bilanski, Piotr', 2],
    ['Wang, HuiMin & Lun, YingYing & Lu, Quan & Liu, HuiXiang', 3],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Yin, Mingliang & Wingfield, Michael J. & Zhou, Xudong', 14],
    ['Zheng, Guiheng & You, Minqi & Li, Xuening & Zhou, Qinzheng', 2],
    ['Zhu, Juye & Tang, Dexiang & Liu, Zuoheng & Luo, Lijun & Yu, Hong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);