function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cameron, P.', 1],
    ['Niu, Gengyun & Wei, Meicai', 33],
    ['Niu, Gengyun & Wei, Meicai & Taeger, Andreas', 24],
    ['Niu, Gengyun Dr. & Wei, Meicai', 5],
    ['Niu, Gengyun Dr. & Wei, Meicai Prof. Dr.', 5],
    ['Niu, Gengyun Dr. & Wei, Meicai Prof. Dr. & Taeger, Andreas', 4],
    ['Niu, Gengyun Dr. & Xiao, Wei & Wei, Meicai Prof. Dr.', 6],
    ['Schedl, W.', 1],
    ['Shinohara, Akihiko & Wei, Meicai & Niu, Gengyun', 11],
    ['Taeger, Andreas & París, Mercedes & Nieves-Aldrey, Jose Luis', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=92)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);