function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aspoeck, Ulrike & Aspoeck, Horst & Liu, Xingyue', 24],
    ['Aspöck, U. & Aspöck, H.', 1],
    ['Boudinot, Brendon E. & Bock, Bernhard L. & Weingardt, Michael', 2],
    ['Liu, Xingyue & Aspöck, Horst & Aspöck, Ulrike', 4],
    ['Lu, Xiumei & Xia, Fangyuan & Wang, Bo & Aspöck, Ulrike', 3],
    ['Monserrat, V. J. & Gavira, O.', 2],
    ['Nakamine, Hiroshi & Yamamoto, Shuhei & Takahashi, Yui', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);