function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baker, Edmund Gilbert', 1],
    ['Callmander, Martin W. & Durbin, Olivier D. & Lack, Hans-Walter', 3],
    ['Diels, Friedrich Ludwig Emil', 1],
    ['Jarvis, Charlie', 2],
    ['Kanehira, Ryozo', 1],
    ['Kieu, Cam Nhung & Tran, Duc Binh & Le, Ngoc Han', 1],
    ['Leal, Eduardo Da Silva & Costa, Denise Pinheiro Da', 1],
    ['Mildbraed, Gottfried Wilhelm Johannes', 4],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 6],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 4],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 1],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 2],
    ['Rechinger, Karl Heinz', 1],
    ['Schumann, Karl Moritz', 2],
    ['Warburg, Otto', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    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);