function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Crawford, J. C.', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 12],
    ['Gumovsky, Alex & Polaszek, Andrew & Murphy, Sean T.', 1],
    ['Hansson, Christer', 67],
    ['Jamali, Mohd Majid & Zeya, Shahid Bin', 8],
    ['Kosheleva, O. V.', 1],
    ['Li, Ming-Rui & Li, Cheng-De', 4],
    ['Mifsud, David & Askew, Richard R.', 1],
    ['Swezey, O. H.', 1],
    ['Walker, Francis', 1],
    ['Westwood, John Obadiah', 2],
    ['Yefremova, Zoya A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=100)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);