function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cockerell, Theodore D. A.', 1],
    ['Comstock, J. H.', 1],
    ['Cooley, R. A.', 2],
    ['Cooley, Robert Allen', 1],
    ['Green, E. Ernest', 1],
    ['Maskell, William Miles', 2],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 3],
    ['Moghaddam, Masumeh', 3],
    ['Novoa, Nereida Mestre & Hamon, Avas & Evans, Greg', 1],
    ['Powell, Erin C. & Halbert, Susan E. & Deeter, Lily', 1],
    ['Signoret, V. A. Le Dr.', 1],
    ['Suh, Soo-Jung', 3],
    ['Tippins, H. H. & Beshear, R. J.', 2],
    ['Vea, Isabelle M. & Gwiazdowski, Rodger A. & Normark, Benjamin B.', 4],
    ['Williams, Douglas J. & Ben-Dov, Yair', 4],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    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);