function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abu El-Ghiet, Usama M. & Gadallah, Neveen S.', 4],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 10],
    ['Fox, William J.', 2],
    ['Gadallah, Neveen S.', 63],
    ['Gadallah, Neveen S. & Abu El-Ghiet, Usama M.', 3],
    ['Ghahari, H. & Havaskary, M. & Tabari, M. & Ostovan, H.', 3],
    ['Jahantigh, Fatemeh & Rakhshani, Ehsan & Mokhtari, Azizollah', 36],
    ['Kohl, Franz Friedrich', 6],
    ['Krombein, Karl V. & Pulawski, Wojciech J.', 16],
    ['Madl, M.', 20],
    ['Madl, Michael & C, Bembecinus & F, Bembix & C, Brachystegus', 12],
    ['Mokrousov, M. V. & Proshchalykin, M. Yu. & Aliyev, Kh. A.', 24],
    ['Mokrousov, Mikhail V. & Proshchalykin, Maxim Yu.', 5],
    ['Rezaei, Shohreh & Fallahzadeh, Majid & Saghaei, Nazila', 47],
    ['Straka, Jakub', 16],
    ['Other (8)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=276)',
    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);