function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agius, Dolores Rita & Galea, Maria Elizabeth', 5],
    ['Astuti, Giovanni & Bartolucci, Fabrizio & Conti, Fabio', 2],
    ['Barone, Giulio & Domina, Gianniantonio & Gristina, Emilio Di', 2],
    ['Becherer', 9],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 3],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Ferrer-Gallego, P. Pablo & Laguna, Emilio & Crespo, Manuel B.', 3],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 4],
    ['Info Flora', 6],
    ['Jarvis, Charlie', 24],
    ['Jeanmonod, Daniel', 3],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 3],
    ['Linnaeus, Carolus', 15],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 4],
    ['Yildirim, Hasan & Crespo, Manuel B.', 2],
    ['Other (14)', 15]
  ]);
  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);