function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bieler, Rüdiger', 28],
    ['Dall, William Healey', 12],
    ['Furuya, Hidetaka', 22],
    ['Habe, Tadashige', 7],
    ['Hebert, E.', 6],
    ['Herbert, D. G.', 8],
    ['Hoek, Paulus Peronius Cato', 30],
    ['Iseto, Tohru', 12],
    ['Moore, Charles', 27],
    ['Pease, W. H.', 7],
    ['Peñas, A. & Rolán, E. & Swinnen, Frank', 23],
    ['Poppe, Guido', 8],
    ['Poppe, Guido & Tagaro, Sheila & Dekker, Henk', 72],
    ['Rubio, F. & Fernández-Garcés, R. & Rolán, E.', 11],
    ['Rubio, F. & Rolán, E. & Fernández-Garcés, R.', 22],
    ['Other (137)', 206]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=501)',
    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);