function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 2],
    ['Bliss, R.', 1],
    ['Chaudhuri, B. L.', 1],
    ['Fricke, Ronald & Allen, Gerald R. & Andréfouët, Serge', 1],
    ['Gilbert, Charles H.', 1],
    ['Gill, T. N. & Smith, H. M.', 1],
    ['Gray, John Edward', 1],
    ['Herre, Albert W. C. T.', 1],
    ['Ho, Hsuan-Ching & Smith, David G. & Mccosker, John E.', 3],
    ['Howell Rivero, L.', 2],
    ['Jamandre, Brian Wade', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Marcia Salustiano de Castro & Ana Cristina Teixeira Bonecker', 2],
    ['McCann, Yule Mervyn Charles', 1],
    ['McClelland, J.', 5],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);