function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 2],
    ['Akrami, Mohammad Ali & Shahedi, Alireza', 1],
    ['Alidaği, Hamide & Ayyildiz, Nusret', 1],
    ['Aoki, Jun-Ichi', 1],
    ['Balogh, János & Balogh, Péter', 1],
    ['Beck, L. & Woas, S.', 10],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 7],
    ['Ebrahimi, Najmeh & Noei, Javad', 1],
    ['HUSHTAN, Habriel H.', 1],
    ['Hugo-Coetzee, Elizabeth A.', 2],
    ['Murvanidze, Maka & Mumladze, Levan', 21],
    ['Schatz, Heinrich & Fortini, Lorenzo & Fusco, Tommaso', 7],
    ['Sh & Hajizadeh, J. & M. A & Rafatifard, M.', 2],
    ['Toluk, Ayşe & Ayyildiz, Nusret', 3],
    ['Weigmann, G. & Miko, L.', 27],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=99)',
    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);