function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boulenger, George Albert', 7],
    ['Daget, J. & Stauch, A.', 1],
    ['Ferraris, Carl J. & Skelton, Paul H. & Vari, Richard P.', 2],
    ['Ferraris, Carl J. & Vari, Richard P.', 3],
    ['Ferraris, Carl J. & Vari, Richard P. & Skelton, Paul H.', 2],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Mo, T. - P.', 1],
    ['Nichols, J. T. & Griscom, L.', 1],
    ['Paul H. Skelton', 13],
    ['Pellegrin, J.', 5],
    ['Poll, M.', 3],
    ['Roberts, Tyson R.', 7],
    ['Résumé, Jacques Daget', 3],
    ['Skelton, P. H.', 2],
    ['Thomson, Alfred W. & Page, Lawrence M. & Hilber, Samantha A.', 7],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    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);