function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ebejer, Martin J. & Gatt, Paul', 1],
    ['El-Hawagry, Magdi S. & Abdel-Dayem, Mahmoud S.', 1],
    ['Kazerani, Farzaneh & Khaghaninia, Samad & Kehlmaier, Christian', 1],
    ['Kehlmaier, Christian', 3],
    ['Majnon Jahromi, B. & Gheibi, M. & Fallahzadeh, M.', 25],
    ['Majnon Jahromi, Bahareh & Gheibi, Mehdi & Fallahzadeh, Majid', 1],
    ['Majnon-Jahromi, Bahareh & Gheibi, Mehdi & Fallahzadeh, Majid', 16],
    ['Motamedinia, Behnam & Skevington, Jeffrey H. & Kelso, Scott', 59],
    ['Rafael, José Albertino & Ale-Rocha, Rosaly', 9],
    ['Rafael, José Albertino & González, Christian Raúl', 7],
    ['Rafael, José Albertino & Rodriguez, Hugo Cesar', 2],
    ['Ramos-Pastrana, Yardany & Rafael, José Albertino', 13],
    ['Withers, Phil & Claude, Jocelyn', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=139)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);