function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Davie, P. J. F. & Pabriks, L.', 1],
    ['Devi, S. Suvarna & Mendoza, Jose C. E. & Ravinesh, R.', 1],
    ['Lagare, Nickel Jean S. & Mapi-Ot, Emmarie F. & Molina, Ziljih S.', 4],
    ['Li, Jheng-Jhang & Rahayu, Dwi Listyo & Ng, Peter K. L.', 10],
    ['Naderloo, Reza', 1],
    ['Naderloo, Reza & Türkay, Michael', 1],
    ['Ng, Peter K. L. & Davie, Peter J. F. & Li, Jheng-Jhang', 4],
    ['Pati, Sameer Kumar & Rani, Varghese', 1],
    ['Rahayu, Dwi Listyo & Li, Jheng-Jhang', 2],
    ['Rahayu, Dwi Listyo & Ng, Peter K. L.', 6],
    ['Shahdadi, Adnan & Ng, Peter K. L. & Schubart, Christoph D.', 4],
    ['Shahdadi, Adnan & Schubart, Christoph D.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);