function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cascio, Pietro Lo & Romano, Marcello & Grita, Flavia', 2],
    ['El-Hawagry, Magdi S. & Sharaf, Mostafa R. & Al Dhafer, Hathal M.', 1],
    ['Gadallah, Neveen S. & Lelej, Arkady S. & Brothers, Denis J.', 4],
    ['Lelej, Arkady S. & Harten, Antonius Van', 3],
    ['Lelej, Arkady S. & Proshchalykin, Maxim Yu.', 4],
    ['Lelej, Arkady S. & Yildirim, Erol', 2],
    ['Ljubomirov, Toshko & Ghahari, Hassan', 10],
    ['Madl, Michael', 1],
    ['Soliman, Ahmed Mostafa', 7]
  ]);
  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);