function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Diego F. & Stefano, Rodrigo Duno De & Stull, Gregory W.', 2],
    ['Baker, Edmund Gilbert', 1],
    ['Jongkind, Carel C. H.', 3],
    ['Labat, Jean-Noël & El-Achkar, Elias & Rabevohitra, Raymond', 4],
    ['Pulle, August Adriaan', 1],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 1],
    ['Rio, Cédric Del & Franceschi, Dario De', 6],
    ['Rio, Cédric Del & Stull, Gregory W. & Franceschi, Dario De', 118],
    ['Sakala, Jakub & Selmeczi, Ildikó & Hably, Lilla', 11],
    ['Sleumer, Hermann Otto', 2],
    ['Stefano, Rodrigo Duno De & Janovec, John P. & Can, Lilia Lorena', 1],
    ['Tiffney, Bruce H. & Manchester, Steven R.', 1],
    ['Wanat, Marek', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=153)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);