function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bleeker, Pieter', 2],
    ['Blyth, E.', 1],
    ['Cantor, Theodore', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 1],
    ['Edwards, A. J. & Gill, A. C. & Abohweyere, P. O.', 1],
    ['Eggert, B.', 2],
    ['Jaafar, Zeehan & Larson, Helen K.', 1],
    ['Jaafar, Zeehan & Polgar, Gianluca & Zamroni, Yuliadi', 1],
    ['Koumans, F. P.', 1],
    ['Larson, Helen K. & Takita, T.', 2],
    ['Lee, Y. - J. & Choi, Youn & Ryu, B. S.', 1],
    ['Murdy, Edward O. & Takita, T.', 1],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 1],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);