function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexander, Timothy & Seehausen, Ole', 1],
    ['Bean, T. H.', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 1],
    ['Fowler, Henry Weed', 2],
    ['Jordan, David Starr & Evermann, Barton Warren', 1],
    ['Koelz, W.', 3],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 5],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 1],
    ['Selz, Oliver M. & Doenz, Carmela J. & Vonlanthen, Pascal', 10],
    ['Selz, Oliver M. & Seehausen, Ole', 14],
    ['Snyder, John Otterbein', 1],
    ['Wagner, G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);