function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R.', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 9],
    ['Bleeker, Pieter', 2],
    ['Chen, T. - R.', 1],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 1],
    ['Fowler, Henry Weed', 2],
    ['Fujiwara, Kyoji & Psomadakis, Peter N. & Swe, Thet Yu Yu', 1],
    ['Greenfield, David W. & Allen, Gerald R.', 1],
    ['Herre, Albert W. C. T.', 2],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 2],
    ['Hoese, Douglass F.', 1],
    ['Hoese, Douglass F. & Larson, Helen K.', 1],
    ['Klausewitz, Wolfgang', 3],
    ['Kovačić, Marcelo & Renoult, Julien P. & Pillon, Roberto', 2],
    ['Smith, H. M.', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    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);