function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Berchi, Gavril Marius & Cianferoni, Fabio & Csabai, Zoltán', 2],
    ['Cianferoni, Fabio & Mazza, Giuseppe', 2],
    ['Cianferoni, Fabio & Rocchi, Saverio & Terzani, Fabio', 1],
    ['Cianferoni, Fabio & Saleem, Rukhshanda & Afsheen, Sumera', 1],
    ['Damgaard, Jakob & Moreira, Felipe Ferraz Figueiredo', 1],
    ['Fent, Meral & Kment, Petr & Çamur-Elipek, Belgin & Kirgiz, Timur', 3],
    ['Ghahari, H.', 1],
    ['Ghahari, Hassan & Moulet, Pierre & Ostovan, Hadi', 1],
    ['Ishikawa, Tadashi & Saito, Masayuki U. & Kishimoto-Yamada, Keiko', 4],
    ['Krüger, Andreas & Deckert, Jürgen', 1],
    ['Pelingen, Arthien Lovell & Zettel, Herbert', 1],
    ['Sakenin, H. & Samin, N. & Rastegari, J. & Havaskary, M.', 2],
    ['Schellenberg, Johann Rudolf', 1],
    ['Taybi, Abdelkhaleq Fouzi & Mabrouki, Youness & Chavanon, Guy', 2],
    ['Yildirim, E. & Yazici, G. & Moulet, P.', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);