function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chan, Benny K. K. & Dreyer, Niklas & Gale, Andy S.', 5],
    ['Korn, Olga M. & Golubinskaya, Darya D. & Sharina, Svetlana N.', 1],
    ['Lützen, Jørgen & Itani, Gyo & Jespersen, Åse & Hong, Jae-sang', 1],
    ['Noever, Christoph & Olson, Andrew & Glenner, Henrik', 6],
    ['Rybakov, Robert H. Gurney Alexey V. & Høeg, Jens T.', 1],
    ['Thompson, John Vaughan', 1],
    ['Yoshida, Ryuta & Naruse, Tohru', 1],
    ['Yoshida, Ryuta & Osawa, Masayuki & Hirose, Mamiko', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);