function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fullaway, D. T.', 1],
    ['Gavrilov-Zimin, I. a.', 2],
    ['Hodgson, Chris J. & Łagowska, Bozena', 2],
    ['Joshi, Sunil & Navik, Omprakash', 3],
    ['Maskell, William Miles', 1],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 1],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 3],
    ['Moghaddam, Masumeh', 1],
    ['Pellizzari, Giuseppina & Porcelli, Francesco', 1],
    ['Suh, Soo-Jung & Bombay, Khanxay', 2],
    ['Unruh, Corinne M. & Gullan, Penny J.', 43],
    ['Watson, Gillian W.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);