function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Elgharbawy, Ali A. & Rasool, Iftekhar', 2],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Abdel-Dayem, Mahmoud S. & Rasool, Iftekhar & Elgharbawy, Ali A.', 2],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Balkenohl, Michael', 4],
    ['Bousquet, Yves', 9],
    ['Bousquet, Yves & Skelley, Paul E.', 1],
    ['Fabricius, Johann Christian', 4],
    ['Faisal, Mohammad & Singh, Sudhir', 1],
    ['Felix, Ron F. F. L. & Farkač, Jan & Suleiman, Ahmed Saeed', 1],
    ['Keller, Oliver & Schnepp, Kyle E. & Ashman, Krystal L.', 2],
    ['Kesdek, Memiş', 4],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 4],
    ['Merene, Yeshitla & Lorenz, Wolfgang & Opgenoorth, Lars', 7],
    ['Serrano, Artur R. M. & Capela, Rúben A.', 4],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);