function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 24],
    ['Do, M. & A. K', 1],
    ['Dorchin, Netta & Mifsud, David & Askew, Richard', 1],
    ['Fisher, Nicole & Salle, John La', 2],
    ['Gadallah, Neveen S. & Yefremova, Zoya A.', 2],
    ['Hansson, Christer & Shevtsova, Ekaterina', 1],
    ['Kosheleva, O. V.', 1],
    ['Madl, Michael & M, Atoposoma & W, Diglyphus', 2],
    ['Mifsud, David & Askew, Richard R.', 2],
    ['Yefremova, Zoya A.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);