function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['El-Hawagry, Magdi & Soliman, Ahmed Mostafa', 9],
    ['El-Hawagry, Magdi S. & Abdel-Dayem, Mahmoud S.', 1],
    ['Linnaeus, Carolus', 10],
    ['Meigen, Johann Wilhelm', 11],
    ['Poda, Nicolaus', 2],
    ['Published, First', 13],
    ['Pérez, Sandra & De Carvalho, Claudio J. B.', 1],
    ['Rocha, Leonardo Silvestre Gomes & Mello-Patiu, Cátia Antunes De', 1],
    ['Scopoli, G. A.', 1],
    ['Scopoli, Ioannis Antonii', 1],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 2],
    ['Stuke, Jens-Hermann', 6],
    ['Stuke, Jens-Hermann & Clements, David K.', 1],
    ['Stuke, Jens-Hermann & Skevington, Jeffrey H.', 2],
    ['Waltl, Joseph', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);