function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Erton M. & Christenhusz, Maarten J. M.', 10],
    ['Becherer', 105],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 44],
    ['Freeman, Craig C.', 11],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 81],
    ['Info Flora', 106],
    ['Jarvis, Charlie', 136],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 86],
    ['Lansdown, Richard V.', 25],
    ['Lansdown, Richard V. & Hassemer, Gustavo', 45],
    ['Lansdown, Richard V. & Rhazi, Laila & Saber, Er-Riyahi', 10],
    ['Linnaeus, Carolus', 56],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 12],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 10],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 10],
    ['Other (57)', 144]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=891)',
    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);