function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Esser, Eitter Jens', 1],
    ['Esser, Jens', 6],
    ['Esser, Jens & R, Nearctic & Usa & M, New', 5],
    ['Esser, Jens & R, Palaearctic', 2],
    ['Ferro, Michael L. & Gimmel, Matthew L. & Harms, Kyle E.', 1],
    ['Herger, Peter & Germann, Christoph & Uhlig, Manfred', 1],
    ['Lea, Arthur Mills', 1],
    ['Lyubarsky, G. Yu. & Perkovsky, E. E.', 1],
    ['Majka, Christopher & Langor, David', 11],
    ['Otero, J. C. & López, M. J.', 1],
    ['Otero, Jose Carlos & Benyahia, Yousra & Brustel, Herve', 8],
    ['R, Palaearctic', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 3],
    ['Webster, Reginald P. & Webster, Vincent L.', 6],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    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);