function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexandre P. Marceniuk & Naércio A. Menezes', 1],
    ['Artaev, Oleg & Ruchin, Alexander B.', 1],
    ['Bleeker, Pieter', 8],
    ['Bloch, Marcus Elieser & Schneider, J. G.', 2],
    ['Day, F.', 3],
    ['Diesing, Carl Moritz', 3],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 2],
    ['Forsskål, Peter', 3],
    ['Hamilton, F. Buchanan', 5],
    ['Kner, R.', 8],
    ['Linnaeus, Carolus', 19],
    ['Rafinesque, Constantine Samuel', 6],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 2],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 2],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 2],
    ['Other (22)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    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);