function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andrews, Fred G.', 5],
    ['Borges, Paulo A. V. & Gaspar, Clara', 8],
    ['Broun, Thomas', 2],
    ['Hartley, Christopher S. & Andrews, Fred G. & McHugh, Joseph V.', 16],
    ['Hartley, Christopher S. & Andrews, Fred G. & Mchugh, Joseph V.', 25],
    ['Herger, Peter & Germann, Christoph', 2],
    ['Ho, Yu-Hsiang & Rücker, Wolfgang H. & Chan, Mei-Ling', 4],
    ['Huber, Barbara & Gubelmann, Päivi & Büche, Boris', 2],
    ['Johnson, Colin', 4],
    ['Otero, Jose Carlos & Benyahia, Yousra & Brustel, Herve', 10],
    ['Otero, Jose Carlos & Pereira, Jose Manuel', 2],
    ['Reike, Hans-Peter & Bukejs, Andris & Arlt, Tobias', 4],
    ['Reike, Hans-Peter Dr.', 3],
    ['Rücker, Wolfgang H.', 5],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 8],
    ['Other (21)', 25]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=125)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);