function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 1],
    ['Baer, Jean Georges', 2],
    ['Brenes, R. R. & Arroyo, G. & Munoz, G.', 1],
    ['Caballero y C., Eduardo & Caballero R., G.', 1],
    ['Cameron, Thomas Wright Moir', 1],
    ['Foster, Aurel Overton', 1],
    ['Heidegger, E. & Mendheim, H.', 2],
    ['Kingston, N. & Cosgrove, G. E.', 2],
    ['Ko, R. C.', 1],
    ['Kossack, Wilhelm', 1],
    ['Ku, C. T.', 1],
    ['Looss, A.', 1],
    ['Nicoll, W.', 1],
    ['Nöller, Wilhelm & Enigk, Karl', 1],
    ['Travassos, L.', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);