function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barcelos, Luis MD & Rodrigues, Pedro R & Bried, Joel', 2],
    ['Boano, Giovanni & Belemsobgo, Urbain & Silvano, Fabrizio', 1],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 9],
    ['Callaghan, Corey T. & Kekeubata, Esau & Waneagea, Jackson', 1],
    ['Eroğlu, Volkan & Oğur, Erdinç', 1],
    ['Gillespie, Lynn J. & Saarela, Jeffery M. & Sokoloff, Paul C.', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 10],
    ['Iamonico, Duilio', 4],
    ['Info Flora', 12],
    ['Jarvis, Charlie', 19],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 11],
    ['Linnaeus, Carolus', 14],
    ['Montesinos-Tubee, Daniel B. & Iamonico, Duilio', 5],
    ['Montesinos-Tubée, Daniel B. & Iamonico, Duilio', 3],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 4],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=102)',
    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);