function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cruz-Gómez, Christopher', 22],
    ['Cruz-Gómez, Christopher & Bastida-Zavala, J. Rolando', 11],
    ['Darbyshire, Teresa', 2],
    ['Darbyshire, Teresa & Brewin, Paul E.', 5],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 6],
    ['Mikac, Barbara', 3],
    ['Muir, Alexander I. & Bamber, Roger N.', 3],
    ['Ravara, Ascensão & Aguado, M. Teresa & Rodrigues, Clara F.', 4],
    ['Ribas, Julia & Hutchings, Pat', 8],
    ['Salazar-Vallejo, Sergio I. & Carrera-Parra, Luis F.', 4],
    ['Walcott, Charles Doolittle', 6],
    ['Watson, Charlotte', 9],
    ['Watson, Charlotte & Faulwetter, Sarah', 19],
    ['Watson, Charlotte & Tilic, Ekin & Rouse, Greg W.', 8],
    ['Wiklund, Helena & Rabone, Muriel & Glover, Adrian G', 5],
    ['Other (5)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=121)',
    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);