function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brook, Fred J. & Ablett, Jonathan D.', 1],
    ['Emberton, Kenneth C. & Griffiths, Owen L.', 2],
    ['Herbert, David G.', 18],
    ['Hyman, Isabel T. & Ponder, Winston F.', 7],
    ['Muratov, Igor V.', 14],
    ['Neubert, Eike & Damme, Dirk van', 1],
    ['Rowson, B & Warren, B. H. & Ngereza, C. F.', 4],
    ['Rowson, Ben & Paustian, Megan & Goethem, Jackie Van', 8],
    ['Résumé, Jacques Daget', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    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);