function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr.', 5],
    ['Allen, Gerald R. Dr. & Drew, Joshua & Kaufman, Les', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 8],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 3],
    ['Burgess, W. E.', 1],
    ['De Vis, Charles Walter', 1],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 5],
    ['Fassbender, Nico & Stefanoudis, Paris V', 4],
    ['Ishikawa, C.', 1],
    ['Klausewitz, Wolfgang', 1],
    ['Macleay, William John', 1],
    ['Montrouzier, X.', 1],
    ['Regan, C. T.', 1],
    ['Whitley, Gilbert P.', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);