function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr.', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 2],
    ['Fourmanoir, Pierre & Crosnier, Alain', 1],
    ['Gon, Ofer & Allen, Gerald R.', 25],
    ['Gon, Ofer & Allen, Gerald R. & Erdmann, Mark V. & Gouws, Gavin', 1],
    ['Klausewitz, Wolfgang', 1],
    ['Pogonoski, John J. & Gon, Ofer & Appleyard, Sharon A.', 1],
    ['Weber, M.', 1],
    ['Whitley, Gilbert P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);