function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andriamiarisoa, Roger Lala & Rabarimanarivo, Marina N.', 1],
    ['Balkwill, K.', 3],
    ['Fischer, Eberhard', 6],
    ['Fischer, Eberhard & Andriantiana, Jacky Lucien & Sieder, Anton', 2],
    ['Fischer, Eberhard & Darbyshire, Iain & Bingham, Mike G.', 2],
    ['Fischer, Eberhard & Lachenaud, Olivier', 3],
    ['Fischer, Eberhard & Vollesen, Kaj B. & Darbyshire, Iain', 3],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 2],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Info Flora', 2],
    ['Jarvis, Charlie', 10],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 2],
    ['Pal, Aaratrik & Chowdhury, Monoranjan', 3],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);