function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alessandri, G. De', 2],
    ['Benny K. K. Chan & H. - N. Chen & P. R. Dando & A. J. Southward', 7],
    ['Carriol, René-Pierre', 4],
    ['Chan, Benny K. K. & Cheang, Chi Chiu', 2],
    ['Chan, Benny K. K. & Tsao, Yao Feng & Ganmanee, Monthon', 2],
    ['Darwin, Charles Robert', 8],
    ['Henry, D. P.', 2],
    ['Nilsson-Cantell, C. a.', 2],
    ['Pilsbry, Henry A.', 11],
    ['Pitombo, Fábio Bettini & Burton, Ron', 4],
    ['Pitriana, Pipit & Valente, Luis & von Rintelen, Thomas', 5],
    ['Pochai, Ashitapol & Kingtong, Sutin & Sukparangsi, Woranop', 5],
    ['Shahdadi, Adnan & Sari, Alireza & Naderloo, Reza', 2],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 2],
    ['Trivedi, Jigneshkumar N. & Doshi, Mahima & Patel, Krupal J.', 2],
    ['Other (28)', 28]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=88)',
    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);