function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. W', 4],
    ['Astafurova, Yulia V. & Proshchalykin, Maxim Yu.', 1],
    ['Boustani, Mira & Rasmont, Pierre & Dathe, Holger H.', 1],
    ['El-Hawagry, Magdi S. & Sharaf, Mostafa R. & Al Dhafer, Hathal M.', 1],
    ['Khodaparast, Razeyeh & Monfared, Alireza', 5],
    ['Lhomme, Patrick', 2],
    ['Madl, Michael', 7],
    ['Murao, Ryuki & Tadauchi, Osamu & Miyanaga, Ryoichi', 6],
    ['Pauly, Alain & Monks, Joseph & Polaszek, Andrew', 2],
    ['Proshchalykin, Maxim & Astafurova, Yulia & Schwarz, Maximilian', 1],
    ['Risch, Stephan & Roberts, Stuart P. M. & Smit, Jan', 1],
    ['Straka, Jakub & Batelka, Jan & Pauly, Alain', 1],
    ['Wood, Thomas James & Cross, Ian & Baldock, David W.', 1],
    ['Zettel, Herbert & Ockermüller, Esther & Schoder, Sabine', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);