function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adema, Fredericus Arnoldus Constantin Basil', 1],
    ['Becherer', 2],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 3],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 13],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Info Flora', 16],
    ['Jarvis, Charlie', 36],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 12],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 3],
    ['Pastore, José Floriano B.', 16],
    ['Pastore, José Floriano Barêa & Antar, Guilherme Medeiros', 3],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 4],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 14],
    ['Wahlert, Gregory A. & Phillipson, Peter B. & Schatz, George E.', 3],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 4],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=146)',
    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);