function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Armitage & Arefina-Armitage, Tatiana I.', 1],
    ['Baturina, N. S. & Efstifeeva, S. S.', 1],
    ['Bowles, David E. & Cheri, Cameron & Usrey, Faron D.', 1],
    ['Dinakaran, S. & Anbalagan, S. & Balachandran, C.', 1],
    ['Embacher, G. & Malicky, H. & A. E & R. A', 1],
    ['Hussain, Zahid & Majeed, Aquib & Ali, Tabraq & Parey, Sajad H.', 10],
    ['Ibrahimi, Halil & Kučinić, Mladen & Vitecek, Simon', 1],
    ['Ito, Tomiko', 6],
    ['Malicky, H.', 4],
    ['Malicky, Hans', 5],
    ['Mey, Wolfram & Malicky, Hans', 3],
    ['Parey, Sajad H. & Morse, John C. & Pandher, Manpreet S.', 3],
    ['Razo-González, María', 4],
    ['Saini, Malkiat S. & Parey, Sajad H.', 7],
    ['Saini, Malkiat Singh & Parey, Sajad Hussain', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);