function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bidzilya, O. V.', 4],
    ['Chira Siadén, Luis E. & Wakeman, Kevin C. & Webb, Stephen C.', 4],
    ['Ghahari, H. & Havaskary, M. & Tabari, M. & Ostovan, H.', 2],
    ['Grisales, Diana & Wolff, Marta & de Carvalho, Claudio J. B.', 8],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 3],
    ['Hollier, John', 5],
    ['Jarvis, Charlie', 9],
    ['Novak, Tone & Novak, Ljuba Slana & Kozel, Peter', 22],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 3],
    ['Paiano, Monica O. & Fumo, James T. & Cabrera, Feresa P.', 2],
    ['Roy, Roger', 2],
    ['Steindachner, F. & Döderlein, P.', 2],
    ['Szita, É. & Benedicty, Zs. & Kozár, F. & P. O', 2],
    ['de Clerck, Olivier & Coppejans, Eric & Schils, Tom', 8],
    ['y, González & Granara de, María C.', 2],
    ['Other (19)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=97)',
    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);